Full Form of Hardware and Networking Devices

This article provides the largest collection of full forms. Learn the meanings of the most commonly used abbreviated terms in the computer hardware and networking field.

A Ampere
A Anchor
A/N/K alphabetic, numeric, katakana
a+ a+
a11y accessibility
A2A application-to-application
AA automated attendant
AA anti-aliasing
AAA authentication, authorization, and accounting
AAB All-to-all broadcast
AAC Advanced Audio Coding
AAC ATM access concentrator
AAL ATM adaptation layer
AARP AppleTalk Address Resolution Protocol
AAS Auto Area Segmentation
AAT Average Access Time
AAUI Apple Attachment Unit Interface
ABAP Advanced Business Application Programming
ABC activity-based costing
ABC Atanasoff-Berry Computer
ABEND abnormal end
ABEND Absent By Enforced Net Deprivation
ABI application binary interface
ABLE Agent Building and Learning Environment
ABM activity-based management
ABME asynchronous balanced mode extended
ABR Automatic Baud Rate detection
ABR available bit rate
ACalternating current
AC97 AC97
ACA Australian Communications Authority
ACAP Application Configuration Access Protocol
ACC Adaptive Cruise Control
ACC Authorization Contract for Containers
ACCU Association of C and C++ Users
ACD Automatic Call Delivery
ACD automatic call distributor or distribution
ACDI Asynchronous Communications Device Interface
ACE access control entry
ACE Adobe Certified Expert
ACE Agile Communication Environment
ACEE access control environment element
ACF Advanced Communications Function
ACF2 Access Control Facility 2
ACG adaptive code generation
ACH automated clearinghouse
ACI access control information
ACID atomicity, consistency, isolation, durability
ACK acknowledgement
ACL Access control list
ACL application connectivity link
ACL Asianet Communications Limited
ACL Asynchronous Connectionless Link
ACM Address Complete Message
ACM Association for Computing Machinery
ACMS Application Control and Management System
ACP array control processor
ACPIadvanced configuration and power interface
ACPI Advanced Configuration and Power Interface
ACR Allowed Cell Rate
ACR attenuation-to-crosstalk ratio
ACRI additional coding-related required information
ACROSS Automated Cargo Release and Operations Service System
ACS Affiliated Computer Services, Inc
ACSE Association Control Service Element
ACSLS Automated Cartridge System Library Software
ACT access control template
ActiveX ActiveX
Activity Streams Activity Streams
ACU abstract code unit
AD Active Directory
AD Administrative Domain
Ad Hoc Network Ad Hoc Network
Ada Ada
ADAPT Architecture, Design, Analysis and Planning Tool
ADB Apple Desktop Bus
ADC Advanced Direct Connect
ADC Analog to Digital Converter
ADC automated data collection
ADCCP Advanced Data Communications Control Procedures
ADDM Application Discovery and Dependency Mapping
ADDM Automatic Database Diagnostic Monitor
ADE Application Data Export
ADE application development environment
ADF Activity Decision Flow
ADF Application Development Facility
ADF automatic document feeder
ADI Analog Devices, Inc.
ADI Application Desktop Integrator
ADK Additional Decryption Key
ADL Advanced Distributed Learning
ADM Agile development management
ADM Application Development ManagerÂ
ADMD Administration Management Domain or Administrative Management Domain
ADMF Asynchronous Data Mover Facility
ADN Advanced Digital Network
ADN application delivery networking
ADO ActiveX Data Objects
ADP Accidental Damage Protection
ADPCM adaptive differential pulse code modulation
ADS Active Directory Service
ADS Asynchrous Data Switching
ADSI Active Directory Services Interface
ADSI Analog Display Services Interface
ADSLasymmetrical digital subscriber line
ADSL Asymmetric Digital Subscriber Line
ADSM ADSTAR Distributed Storage Manager
ADSPAppleTalk data stream protocol
ADSR Attack, Decay, Sustain, Release
ADSTAR Automated Document Storage and Retrieval
ADT Abstract Data Type
ADT admission, discharge and transfer
ADT application deployment template
ADTG Advanced Data Table Gram
ADUC Active Directory Users and Computers
Adwords Adwords
AEC Architecture, Engineering, Construction
AEPAppleTalk echo protocol
Aero Aero
AES Advanced Encryption Standard
AF Assured Forwarding
AF audio frequency
AFAICS, AFAIK, AFAIR As Far As I Can See/Know/Recall
AFC antiferromagnetically coupled
AFI Authority and Format Identifier
AFIS Automated Fingerprint Identification System
AFK Away From Keyboard
AFL Academic Free License
AFM Atomic Force Microscope
AFPAppleTalk Filing protocol
AFP Advanced Function Printing
AFP Apple Filing Protocol
AGC Automatic Gain Control
AGPaccelerated graphics port
AGP Accelerated Graphics Port
AHCI Advanced Host Controller Interface
AHP analytical hierarchy process
AI Action Indicator
AI Adobe Illustrator
AI artificial intelligence
AIA Application Integration Architecture
AID attention identifier
AIM AOL Instant Messenger
AIN Advanced Intelligent Network
AIO all in one
AIOD Automatic Identified Outward Dialing
AIP Advanced Inspection and Prevention
AIR Additive Increase Rate
air interface air interface
air PBX air PBX
AIT Advanced Intelligent Tape
AIUI As I Understand It
AIX Advanced Interactive Executive
Ajax Asynchronous JavaScript and XML
AJP Apache JServ Protocol
AL PA Arbitrated Loop Physical Address
ALET access list entry token
ALG Application Layer Gateway
ALGOL ALGOrithmic Language
ALI Application layer interface
ALM Application Life Cycle Management
ALM Asset Lifecycle Management
ALM Asynchronous Line Multiplexer
ALP Application Layer Program / Protocol
ALSA Advanced Linux Sound Architecture
ALT alternative
ALU Alcatel-Lucent
ALU arithmetic logic unit
always-on always-on
AM Amplitude Modulation
AMA automatic message accounting
Amanda (formerly) Advanced Maryland Automatic Network Disk Archiver
AMDadvanced micro devices
AMD Active Matrix Display
AMD Advanced Microchip Devices
AMD architected model-driven
AME Advanced Metal Evaporated
AMI advanced meteringÂ
AMI Alternate Mark Inversion
ami Analyze, Metricate, Improve
AMI Application Messaging Interface
AMI infrastructure
AML Anti-Money-Laundering
AML Astronomical Markup Language
AMMA Advanced Memory Management Architecture
AMP ampere (A)
AMP amplifier
AMP Asymmetric Multi-Processing
AMPS Advanced Mobile Phone System
AMRaudio modem riser
AMR Audio Modem Riser
AMR Automatic meter reading
AMRF Action Message Retention Facility
AMS access method services
AMS Analog/Mixed-Signal
AMS Application Management Services
AMT Active Management Technology
AMT address mapping table
AMTA American Mobile Telecommunications Association
ANDF Architecture-Neutral Distribution Format
Android Android
ANI Automatic Number Identification
Anon FTP Anonymous FTP
Anonymous Anonymous
ANOVA analysis of variance
ANR automatic network routing
ANSI American National Standards Institute
antenna antenna
ANX Automotive Network Exchange
AOA angle of arrival
AOCE Apple Open Collaboration Environment
AoE Ata Over Ethernet
AOF Advanced Open File
AOF application object file
AOL America Online
AOL Application Object Library
AOR Address of Record
AP access point
APA all-points addressable
APaaS application platform as a service
APACS Association for Payment Clearing Services
Apart a challenge-response system test designed to differentiate humans from automated
APaRT automated packet recognition/translation
APC American Power Conversion
APC Antenna Phase Center
APC asynchronous procedure call
APDU application-layer protocol data unit
APF Automated Purposing Framework
APIApplication Programming Interface
API Advanced Photonix, Inc
API Application Programming Interface
APIPAautomatic private internet protocol addressing
APMadvanced power management
APM Active policy management
APM Advanced Power Management
APM application performance management
APML Attention Profiling Markup Language
APNIC Asia Pacific Network Information Center
APO Advanced Planner and Optimizer
APOP Authenticated Post Office Protocol
APOT Alternate (Additional) Point of Termination
app application
APPCAdvanced Peer to Peer Communications
APPC Advanced Program-to-Program Communication
applet applet
APPNAdvanced Peer to Peer Networking
APPN Advanced Peer to Peer Networking
APR Apache Portable Runtime
APS advanced planning and scheduling
APS Automatic Protection Switching
APWG Anti-Phishing Working Group
AQCB Automated Quote Contract Billing
AR Access Rate
AR Augmented reality
ARA Apple Remote Access
ARAD architected rapid application development
ARAG AntiReflection AntiGlare
ARC Ames Research Center
ARC Archive
archive archive
ARCnetAttached Resource Computer Network
ARCNET Attached Resource Computer NETwork
ARD Automatic Ring Down
ARIA Accessible Rich Internet Applications
ARIN American Registry for Internet Numbers
ARL ABLE Rule Language
ARM Active Registry Monitor
ARM Advanced RISC Machines
ARM Asynchronous Response Mode
ARPaddress resolution protocol
ARP Address Resolution Protocol
ARPANET Advance Research Projects Agency Network
ARQ automatic repeat request
ARS Action Request System
ARS automatic route selection
ART Additional Reference Transmission
ARTS Association for Retail Technology Standards
ARu audio response unit
ARUPAppleTalk update routing Protocol
AS Activesync
AS / ASN autonomous system (number)
AS/400 Application System/400
AS2 Applicability Statement 2
ASA average speed of answer
ASBR Autonomous System Boundary Router
ASC Abstract Syntax Checker
ASCII American Standard Code for Information Interchange
ASCL Asianet Satellite Communications Limited
ASE Adaptive Server Enterprise
ASE application service element
ASF Advanced Streaming Format
ASF Automatic Sheet Feeder
ASIC Application-Specific Integrated Circuit
ASIF access security information field
ASIS access security information subfield
ASK Anomalous State of Knowledge
ASLR Address Space Layout Randomization
ASLS Analog Single Line Station
ASM Automatic Storage Management
ASM Auto-sequencing memory
ASML originally ASM Lithography (ASM for Advanced Semiconductor Materials)
ASN Abstract Syntax Notation
ASN.1 Abstract Syntax Notation One
ASO Address Supporting Organization
ASPAppleTalk session protocol
ASP Abstract Service Primitive
ASP Active Server Pages
ASP Application Server Process
ASP Application Service Provider
ASP Aspect Oriented Programming
ASP Average Selling Price
ASPI Advanced SCSI Programming Interface
ASPX Active Server Pages eXtended
ASQ Automated Software Quality
ASRautomated system recovery
ASR Access Service Request
ASR Automated System Recovery
ASR Automatic Send and Receive
ASR Automatic Speech Recognition
ASV Approved Scanning Vendor
ATadvanced technology
AT Advanced Technology
AT&T American Telephone And Telegraph
ATAadvanced technology attachment
ATA Actual Time of Arrival
ATA Advanced Technology Attachment
ATA Analog Telephone Adaptor
ATAG Authoring Tool Accessibility Guidelines
ATAPIadvanced technology attachment packet interface
ATAPI AT Attachment Packet Interface
ATB All the Best
ATB all trunks busy
ATCA Advanced Telecom Computing Architecture
ATG advanced technology group
ATG Art Technology Group
ATI Allied Telesyn International
ATL Active Template Library
ATL automated tape library
ATLAS Authorization Token Layer Acquisition Service
ATMasynchronous transfer mode
ATM Adobe Type Manager
ATM asynchronous transfer mode
ATM At the moment
ATM automated teller machine
ATO assemble to order
Atom Any Transport over MPLS
Atom Atom
ATPAppleTalk Transaction Protocol
ATP AppleTalk Transaction Protocol
ATP available to promise
ATPCO Airline Tariff Publishing Company
ATRAC Adaptive TRansform Acoustic Coding
ATRN Authenticated Turn
ATS Abstract Test Suite
ATS Air to Surface
ATS Applications Technology Satellite
ATSC Advanced Television Systems Committee
ATTIS AT&T Information Systems
ATU-C / ATU-R ADSL Transmission Unit, Central or Remote
ATUL ADSL Termination Unit Remote
ATVEF Advanced TV Enhancement Forum
ATXadvanced technology extended
ATX Advanced Technology eXtended
AUAccess Unit
AUDIT AUtomated Data Input Terminal
AUIAttachment unit interface
AUI Attachment Unit Interface
AUIML Abstract User Interface Markup Language
AUP acceptable use policy
AUTOEXEC Automatic Execution
AUTONEG Autonegotiation
Autonomous Vehicles Autonomous Vehicles
AUV Autonomous Underwater Vehicle
AUX auxiliary device
AV Anti Virus
AV Audio Video or Visual
avatar avatar
AVD alternate voice data
AVED AntiVirus Emergency Discussion list
AVI Audio/Video Interleaved
AVK Application Verification Kit
AVS Application Visualisation System
AVST Applied Voice & Speech Technologies Inc.
AVVID Architecture for Voice, Video and Integrated Data
AWD Access Workflow Designer
AWE Advanced WavEffects
AWS Advanced Wireless Services
AWS Amazon Web Services
AWS Autonomous Web Services
AWT Abstract Window Toolkit
b bit
B byte
B channel Bearer Channel
B2B business-to-business
B2C business-to-consumer
B2E business-to-employee
B8ZS Binary Eight Zero Suppression.
BAA Blanket Authorization Agreement
BAC BroadCast Agent
BACNET Building Automation and Control Network protocol
BAF Bellcore AMA Format
BAI Bank Administration Institute
BAM business activity monitoring
BAN Body Area Networks
BAPI Business Application Programming Interface
bar file broker archive file
Basel II Basel Capital Accord
BASH Bourne-Again SHell
BASIC Beginners’ All-purpose Symbolic Instruction Code
BAT Baby Advanced Technology
BBC British Broadcasting Corporation
BBCs buffer-to-buffer credits
BBN Bolt, Beranek and Newman
BBP Business-to-Business Procurement
BBS Bulletin Board System
BC4J Business Components For Java
BCB buffer control block
Bcc Blind Carbon Copy
BCC Block Check Character
BCD binary-coded decimal
BCE Bell Canada Enterprises;
BCEL Byte Code Engineering Library
BCI Business Continuity Institute
BCM / BCMP Business Continuity Management (Planning)
BCOCA Bar Code Object Content Architecture
BCP Best Current Practice
BCS basic content services
BCUG bilateral closed user group
BCV business continuance volume
BCX Basic To C Translator
BD Blu-ray Disc
BDCBackup Domain Controller
BDC Backup Domain Controller
BDF building distribution frame
BECN Backward Explicit Congestion Notification
BEEP Blocks Extensible Exchange Protocol
Bellcore Bell Communications Research
BER Basic Encoding Rules
BERT Bit Error Rate Test
BES BlackBerry Enterprise Server
BFR Bona Fide Request
BFT Binary File Transfer
BGA ball grid array
BGAN Broadband Global Area Network
BGI Binary Gateway Interface
BGPBorder Gateway Protocol
BGP Border Gateway Protocol
BGP Border Gateway Protocol (routing protocol)
BGP-4 Border Gateway Protocol-4
B-HAVW Behavioral Heuristic Analyzer in Virtual Environments
BHCA busy hour call attempt
BHCC busy hour call completion
BHLI Broadband High Layer Information
BHMC Busy Hour Minutes of Capacity
BHO Browser Help Object
BI business intelligence
BIA business impact analysis
BIBOP big bag of pages
BIC bank identifier code
BICI Broadband Inter-Carrier Interface
BiDi Bi-Directional
BIDS Business Intelligence Development Studio
Bin binary
Binhex BINary HEXadecimal
BIOD block input/output daemon
BIOSbasic input/output system
BIOS Basic Input/Output System
BIP Bit Interleaved Parity
BIPS Bank Internet Payment System
BIRT Business Intelligence and Reporting Tools
BIST built-in self test
BISUP Broadband ISDN User’s Part
Bisync or BSC Binary SYNChronous
Bit Binary DigIT
BIT7 Bit Seven
BITNET Because It’s Time Networking
BITS Background Intelligent Transfer Service
BITW Bump-In-The-Wire
BIW Business Information Warehouse
BL BLade Server
BLAST Basic Local Alignment Search Tool
BLISS Broadband Local Integrated Services Solution
B-LLI Broadband Low Layer Information
BLOB binary large object
BLOG Better Listings on Google
Blog / Blogger weB LOG
BLS Basic Link Service
BMRT Blue Moon Rendering Tools
BMT Biel Mean Time
BNCBayonet-Neill-Concelman or British Navel Connector
BNC Bayone-Neill-Concelman / British Naval Connector
BNF Backus-Naur Form
BNI Broadband Network Interface
BNOS Brocade Network OS
BO / BOBJ Business Objects
BOA Basic Object Adapter
BOB Breakout Box
BOC Bell operating company
BOCU-1 Binary Ordered Compression for Unicode
BoD Bandwidth on Demand
BOD Business Object Document
BOL Books Online
BOM Beginning of Message
BONDING Bandwidth on Demand Inter-Operability Group
boot bootstrap
BOOTPBoot Protocol
BOOTP Bootstrap Protocol
BOPS Billions of Processes Per Second
BOT beginning of tape
bot / botnet robot (network)
BPA Business Process Analysis
BPC Business Planning and Consolidation
BPDM Business Process Definition Metamodel
BPDU Bridge Protocol Data Unit
BPEL Business Process Execution Language
BPEL4WS Business Process Execution Language for Web Services
bpi bits per inch
BPL broadband over power lines
BPM business process management
BPON Broadband Passive Optical Network
BPOS Business Productivity Online Standard Suite
BPP Bluetooth Basic Printing
BPPM BMC ProactiveNet Performance Management
bps Bits Per Second
BPV BiPolar Violation
BRA Basic Rate Access
BRAN Broadband Radio Access Networks
BRAS Broadband Remote Access Server
BRE Business rule engines
BREW Binary Runtime Environment for Wireless
BRF Benchmark Report Format
BRIbasic rate interface
BRI Basic Rate Interface
BROUTER Bridge-Router
BRR Business Readiness Rating
BRZ Bipolar Return to Zero
BS 7799 British Standard 7799
BSA Business Software Alliance
BSCBinary Synchronous Communication
BSC Balance Score Card
BSC binary synchronous communication
BSD Berkeley Software Distribution
BSDI Berkeley Software Design, Inc.
BSE Basic Service Elements
BSM Business Service Management
BSNL Bharat Sanchar Nigam Limited
BSoD Blue Screen of Death
BSP board support package
BSS Base Station System
BSS Basic service set (Wi-Fi)
BSSID basic service set identifier
BST binary search tree
BT BitTorrent
BTAG Beginning Tag
BTAM Basic Telecommunications Access Method
BTM Benchmark Timing Methodology
BTO Business technology optimization
BTS Bits Per Second
BTW By The Way
BTXbalanced technology extended
BTX Balanced Technology eXtended
BUS Broadcast and Unknown Server
BVD Basic Virtual Disk
BW bandwidth
BYOD bring your own device
C&SI consulting and system integration
C/kT carrier-to-receiver noise density
C++ / CPP C Plus Plus
C2A Click-to-Action
C4S command, control, communications, and computer systems
C64/128 Commodore 64/128
CA Certificate Authority
CaaS Communications as a Service
CAC Call Admission Control
CAD/ CAM Computer-Aided Design / Manufacturing
CAI Common Air Interface
CAL Client Access License
CALEA Communications Assistance for Law Enforcement Act
CAM Capital Asset Management
CAMA centralized automatic message accounting
CAMEL Customized Application for Mobile networks Enhanced Logic
CAN Campus Area Network
CAN-SPAM Controlling the Assault of Non-Solicited Pornography and
CAP carrierless amplitude phase modulation
CAPA CA Productivity Accelerator
CAPE concurrent art-to-product environment
CAPI Common Application Programming interface
caps capital letters
CAPTCHA Completely Automated Public Turing Test to tell Computers and Humans
CAR committed access rate
CARE Customer Account Record Exchange
CAROT Centralized Automatic Reporting on Trunks
CARP Common Address Redundancy Protocol
CART command and response token
CAS centralized attendant services
CASE computer-aided software engineering
CAT Category (e.g. CAT-5 cable)
CAT Communications Authority of Thailand
CAT n Category n
CATI computer-aided telephone interviewing
CATIA Computer Aided Three-dimensional Interactive Application
CATP Caffeine Access Transport Protocol
CATS Calling Card & Third Number Settlement
CATV community antenna television (or Cable TV system)
CAV Constant Angular Velocity
cB C Beautifier
CBC cipher block chaining
CBL Composite Blocking List
CBN common bonding network
CBP Certifed BiometricsÂ
CBQ Class-Based Queuing
CBR constant bit rate
cbr files Comic Book Archive
CBT Computer Based Training
CBWFQ Class-Based Weighted Fair Queueing
cc carbon copy
CC closed captioning
CCA Citrix Certified Administrator
CCAs composite content applications
CCC Clear Channel Capability
CCDcharged coupled device
CCD Charge Coupled Device
CCD+ Cash Concentration and Disbursement plus addenda
CCF call control function
CCH connections per circuit hour
CCHIT Certification Commission for Health Information Technology
CCI controlled cryptographic item
CCIE Cisco Certified Internetwork Expert
CCIR Comite Consultatif International des Radio Communications
CCIS common-channel interoffice signaling
CCITT International Telegraph and Telephone Consultative Committee
CCITT (obs.) Standards organization that has been replaced by ITU-T
CCL Communications Control Language
CCNA Cisco Certified Network Associate
ccNSO Country Code Names Supporting Organization
CCOW Clinical Context Object Workgroup
CCP Certified Computer Professional
CCPM Critical Chain Project Management
CCR channel command retry
CCS Centum Call Seconds
CCSA common control switching arrangement
CCSE Checkpoint Certified Security Expert
ccTLD country code Top-Level Domain
CCTV Closed-Circuit Television
CDcompact disc
CD Compact Disc
CD Table change-data table
CDB capacity database
CDC call data channel
CDDI Copper Distributed Data Interface
CDE common desktop environment
CDF Channel Definition Format
CDFScompact disc file system
CDFS compact disc file system
CDH Customer Data Hub
CDI client device identification
CDMA Code Division Multiple Access
CDN content-delivery network
CDO care delivery organization
CDP Cisco Discovery Protocol
CDPD Cellular Digital Packet Data
CDR call detail recording
CD-R Compact Disc - Recordable
CD-ROMcompact disc-read-only memory
CD-ROM compact disc read-only memory
CD-RWcompact disc-rewritable
CD-RW Compact disc-rewritable
CDS Correlated Double Sampling
CDT C/C++ Development Tools
CDV Cell Delay Variation
CE router Customer edge router
CEA Consumer Electronics Association
CEAP cloud-enabled application platforms
CEBP communication-enabled business process
CEF Cisco Express Forwarding
CEH Certified Ethical Hacker
CEI Common Event Infrastructure
CEIM Common Enterprise Information Model
CELL/B.E. Cell Broadband Engine
cellphone Cellular Telephone
CELP code-excited linear prediction
CEM customer experience management
CEMF Cisco Element Management Framework
CEP complex event processing
CEPS Common Electronic Purse Standard
CER Corporate Error Reporting
CERN Conseil Europeen pour la Recherche Nucleaire
CERT Computer Emergency Response Team
CES Character Encoding Scheme
CES Consumer Electronics Show
CESID caller’s emergency service identification
CEVA content-enabled vertical application
CF Compact Flash
CFA Circuit Facility Assignment
CFA Color Filter Array
CFB Ciphertext feedback
CFM Code Fragment Manager
CFM Cubic Feet per Minute
CfMD Certified for Microsoft Dynamics
CFMN Client For Microsoft Networks
CFV Call For Votes
CG Computer Graphics
CGA Colour Graphics Adaptor
CGI Common Gateway Interface
CGI Conseillers en Gestion et Informatique (french)
CGM Consumer-generated media
CGMP Cisco Group Multicast Protocol
C-GREX Chaos Game Representation Explorer
CHAPChallenge Handshake Authentication Protocol
CHAP Challenge Handshake Authentication Protocol
CHAP Challenge-Handshake Authentication Protocol (PPP)
Charset character set
chat conversational hypertext access technology
CHIPS Clearing House Interbank Payments System
ChR channel reliability
cHTML Compact Hypertext Markup Language
CIA confidentiality, integrity, and availability
CIC circuit identification code
CICS Customer Information Control System
CIDRClassless Inter Domain Routing
CIDR Classless Inter-Domain Routing
CIDR Classless Internet Domain Routing
CIE Commission Internationale de l’Eclairage
CIFS Common Internet File System
CIK crypto-ignition key
CIM Common Information Model
CINDER Cyber Insider Threat
CIO chief information officer
CIP Common Industrial Protocol
CIPA Children’s Internet Protection Act
CiR circuit reliability
CIR committed information rate
CIR Committed Information Rate (Frame Relay)
CIS clinical information system
CISC Complex Instruction Set Computer
CISO chief information security officer
CISSP Certified Information Systems Security Professional
CIX Commercial Internet Exchange
CJK / CJKV Chinese, Japanese, and Korean (Vietnamese)
CKD count key data
CKO chief knowledge officer
CLA Corporate License Agreement
CLASS Custom Local Area Signaling Services
CLEC Competitive Local Exchange Carrier
CLI Call Level Interface
CLI Calling Line Identification
CLI command line interface
CLI Command line interpreter
CLIPS C Language Integrated Production System
CLLI Common Language Location Identifier
CLM Contract lifecycle management
CLNP ConnectionLess Network Protocol
CLOB character large object
CLR Cell Loss Ratio
CLR common language runtime
CLTP ConnectionLess Transport Protocol
CLUSRCVR cluster-receiver channel
CLUSSDR cluster-sender channel
CLUT Color LookUp Table
CLV Constant Linear Velocity
CMA Circular Mil Area
CMC computer-mediated communication
CMDB configuration management database
CME Common Malware Enumeration
CMIP Common Management Information Protocol
CMIS common management information service
CMIS Content Management Interoperability Services
CMM Capability Maturity Model
CMOScomplementary metal-oxide semiconductor
CMOS complementary metal-oxide semiconductor
CMOT CMip Over Tcp
CMRR common-mode rejection ratio
CMRS Commercial Mobile Radio Service
CMS Color management system
CMS content management system
CMTS cable modem termination system
CNA Converged Network Adapter
CNAM Caller ID With Name
CNAME Canonical name
CNE Certified Novell Engineer (also Certified Network Engineer)
CNGI China’s Next Generation Internet
CNN Cable News Network
CNN composite network node
CNRcommunication network riser
CNR Carrier to Noise Ratio
CNR combat-net radio
CO central office
CoA Care Of Address
COAM customer owned and maintained
coax coaxial (cable)
COBIT Control Objectives for Information and related Technologies
COBOL Common Business Orientated Language
COCOMO COnstructive COst MOdel
COD Call of Duty
COD confirm on delivery
COD Connection Oriented Data
CoDA Context Delivery Architecture
CODEC coder/decoder or compressor-decompressor
COE Component Object modEl
COEs centers of excellence
COIN Community Of Interest Network
COLD computer output to laserdisc
colo co-location
COM communications port
COM Component Object Model
COM computer output to microfiche
com (.com) commercial
COM1communication port 1
COMDEX Computer Dealers Expo
COMPAQ COMPatibilty And Quality
COMPARE Compliance Progress and Readiness
COMSAT Communications Satellite Corporation
COOL C++ Object Oriented Language
COOP Continuity of Operations Plan
COPPA Children’s Online Privacy Protection Act
COPS Common Open Policy Service
COPS Communications Outsourcing and Professional Services
COR central outdoor router
CORBA Common Object Request Broker Architecture
CORE COMPARE Operational Readiness Evaluation
CORS Continuously Operating Reference Station
CoS class of service
COS Cloud Optimized Storage
COTS commercial off-the-shelf
COW Copy-On-Write
CPA Cost Per Action
CPAN Comprehensive Perl Archive Network
cPanel control panel
CPC Calling Party Control
CPC Cost Per Click
CPE Customer premises equipment
CPF Cloud Provisioning Fabric
cpi characters per inch
CPLD Complex Programmable Logic Device
CPM corporate performance management
CPN calling party number
CPNI Customer Proprietary Network Information
CPOE Computerized Provider Order Entry
CPRM Content Protection for Removable Media
cps Characters Per Second
CPS Continuous Protection Server
CPUcentral processing unit
CPU Call Pick Up
CPU Central processing Unit
CPU Critical Patch Update
CRACK Challenge/Response Authentication of Cryptographic Key
CRC Cyclic Redundancy Check
CRC Cyclical redundancy check
CRC-16-CCITT Cyclical redundancy check (X.25, HDLC)
CRIMMcontinuity-rambus inline memory module
CRL certificate revocation list
CRLF carriage return, line feed
CRM Customer Relationship Management
CRMB Customer Reference Material Database
cROI companywide ROI
CRR Continuous Remote Replication
CRTcathode-ray tube
CRT Cathode Ray Tube
CRUD Create, Read, Update, Delete
crypto Cryptography
CS Computer science
CS Creative Suite
CSA cloudÂ
CSA Communications Streaming Architecture
CSA Composite Services Architecture
CSA service agreements
CSC card security code
CSC Circuit Switched Cellular
CSC Computer Sciences Corporation
CSC Content Security and Control
CSCF call session control function
CSCW computer supported co-operative work
CSD Cisco Secure Desktop
CSE custom search engine
Csel Cable Select
CSFs critical success factors
CSG Communications Services Group
CSMA/CA Carrier sense multiple access / collision avoidance
CSMA/CA Carrier Sense Multiple Access/Collision Avoidance
CSMA/CD Carrier sense multiple access / collision detection
CSMA/CD Carrier Sense Multiple Access with Collision Detection
CSO chief sourcing officer
CSO Cold Start Only
CSP Chip-scale packaging
CSP Communications service providers
CSP Crystal Server Pages
CSS Cascading Style Sheet
CSS-P cascading style sheet positioning
CST Consolidated Service Test
CSUChannel service unit
CSU Certificate Signing Unit
CSU Channel Service Unit
CSU/DSU Channel service unit / data service unit
CSV Circuit Switched Voice
CSV comma separated values
CSW channel status word
CT China Telecom
CT Contone
CTCp Client-To-Client-Protocol
CTD Cell Transfer Delay
CTI computer-telephony integration
CTO chief technology officer
CTP capable to promise
CTR Click-Through Rate
ctrl control
CTS clear to send
CTS common transport semantics
CTT China Tietong Telecommunications
CTX Commited to Excellence
CUG closed user group
CUoD Capacity Upgrade on Demand
CUPS Common Unix Printing System
CVP Content Vectoring Protocol
CVS Computer Vision Syndrome
CVS Concurrent Versions System
CVSD Continuous Variable Slope Delta modulation
CVV2 / CVC / CVC2 Card Verification Value 2 / Card Verification Code /Card
CYMK cyan, magenta, yellow, black
D&I Drop And Insert
D2D disk-to-disk
D2D2T disk-to-disk-to-tape
DA Destination Address
DAA Distributed Application Architecture
DaaS desktops-as-a-service
DAB Digital Audio Broadcast
DACdiscretionary access control
DAC digital-to-analog converter
DAC / DACL Discretionary Access Control List
DACS Digital Access and Cross Connect System
DAE Disk Array Enclosure
Daemon Disk And Execution MONitor
DAFS Direct Attached File System
DAL Dedicated Advertiser Location
DAM Database Activity Monitoring
DAM Digital Asset Management
DAMA demand assigned multiple access
DAML DARPA Agent Markup Language
DAO Disk-At-Once
DAP Directory Access Protocol
DAR Data at rest
DAR Disk ARchive
DARPA Defense Advanced Research Project Agency
DASDual attachment stations
DAS direct-attached storage
DAS distributed antenna system
DASH Desktop and mobile Architecture for System Hardware
DAST Dynamic Application Security Testing
DATDigital Audio Tape
DAT digital audio tape
DAVID Digital Audio Video Interactive Decoder
DB Database
db Decibel
DB2 Database 2
DB-25serial communications D-shell connector, 25 pins
DB-99 pin D shell connector
DB9 D sub-miniature 9
DBA database administrator
DBCS Double-Byte Character Set
dBm decibels milliwatt
DBMSDatabase Management Systems
DBMS Database Management System
DBS direct broadcast satellite
DCdirect current
DCAP Data Link Switching Client Access Protocol
DCB Data Center Bridging
DCBU D-channel backup
DCC Data Country Code
DCC Digital Command Control
DCC Direct Client-to-Client
DCCP Datagram Congestion Control Protocol
DCEData communications equipment
DCE Data communications equipment
DCE Distributed Computing Environment
d-channel / D channel data channel
d-channel / D channel delta channel
DCO Device Configuration Overlay
DCOM Distributed Component Object Model
d-commerce digital commerce
DCS Desktop color separation
DCT Digital Cordless Telephone
DDAP Digital Distribution of Advertising for Publications
DDBMS Distributed database management system
DDCMP Digital Data Communications Message Protocol
DDD Data Display Debugger
DDE Dynamic Data Exchange
DDI Device Driver Interface
DDI Direct Dialling-In
DDI DNS, DHCP & IP address
DDL Data Definition Language
DDN Digital Data Network
DDNS Dynamic Domain Name System
DDOSdistributed denial of service
DDoS Distributed Denial of Service
DDPDatagram Delivery Protocol
DDP Datagram Delivery Protocol
DDRdouble data-rate
DDR double-data-rate
DDR RAMdouble data-rate random access memory
DDR SDRAMdouble data-rate synchronous dynamic random access memory
DDSDigital data service
DDS Dataphone digital service
DDS digital data service
DDS Digital Data Storage
DDSA digital data service adapter
DDT Disk-to-Disk-to-Tape
DEA Data Encryption Algorithm
DEC Digital Equipment Corporation
DEC (obs.) Digital Equipment Corporation
DECT Digital Enhanced Cordless Telecommunications
defrag defragment
DEK data encryption key
Demarc Demarcation Point
Demux demultiplexer
DEN Directory Enabled Network
DEP Data Execution Prevention
DEP dynamic enterprise publishing
DES Data Encryption Standard
DES Data Encryption Standard (obs. See AES)
DES Dynamic Energy Saver
DET Directory Entry Table
DFI Design for Innovation
DFL design for logistics
DFM design for manufacturability
DFM Device Fault Manager
DFM Digital Flash Media
DFSdistributed file system
DGC Distributed garbage collection
DHA directory harvest attack
DHCPdynamic host configuration protocol
DHCP Dynamic Host Configuration Protocol
DHTML Dynamic HyperText Markup Language
DHX Diffie-Hellman Exchange
DI/DO Dispatch In/ Dispatch Out
DIA data integration and access
DIA Dedicated Internet Access
DICOM Digital Imaging and Communications in Medicine
DID direct inward dial
DIF Directory Interoperability Forum
DiffServ Differentiated Services
Digerati digital version of literati (Italian)
DIIOp Dominio Internet Inter-Orb Protocol
DIMMdual inline memory module
DIMM Dual In-line Memory Module
DINDeutsche Industrie Norm
DIPdual inline package
DIP Dual Interface Poll
DIPP Dual Inline Pin Package
DIR DIRectory
Dirid Directory identifier
DISA Data Interchange Standards Association
DISA Defense Information Systems Agency
Disc / Disk DISKETTE
DIT Directory Information Tree
DITTO Data Interfile Transfer, Testing and Operations
Divx DIgital Video Express
DIX Digital, Intel , Xerox
DKI Driver Kernel Interface
DKMS Dynamic Kernel Module Support
DL Density Line
DL double-layer
DLCData Link Control
DLC data link control
DLC Digital Loop Carrier
DLCI data link connection identifier
DLDP Device Link Detection Protocol
DLE data link escape
DLL dynamic link library
DLM data life cycle management
DLOS Desktop Line-of-sight
DLOS Direct Line-of-sight
DLPdigital light processing
DLP data leak prevention
DLP Digital Light Processing
DLPBC Dual Loop Port Bypass Circuitry
DLPI Data Link Provider Interface
DLR Design Layout Record
DLTdigital linear tape
DLT Digital Linear Tape
DM Data Mining
DMAdirect memory access
DMA Direct Memory Access
DMAA Discrete Mathematics, Algorithms and Applications
DMB Dhtml Menu Builder
DMCA Digital Millennium Copyright Act
DME distributed management environment
DMI Desktop Management Interface
DML Data Manipulation Language
DMO Distributed Management Object
DMS Digital Multiplex Systems
DMT Discrete Multi-Tone
DMZ demilitarized zone
DNADigital Network Architecture
DNA Deoxyribonucleic acid
DNA Distributed Network Architecture
DNIC data network identification code
DNLC Directory Name Lookup Cache
DNR Digital Noise Reduction
DNSdomain name service or domain name server
DNS Domain Name Service / Server / System
DNS Domain Name System
DNSBL DNS Based List, DNS Blacklist, or DNS Blocklist.
DNSSEC Domain Name System SECurity extensions
DOA Dead On Arrival
DoCoMo Do Communication over the Mobile network
DOCSIS Data-over-Cable Service Interface Specifications
DO-IT Disabilities, Opportunities, Internetworking and Technology
Dolly Digital Dolly
DOM distributed output management
DOM Document Object Model
DOMAIN Distributed Operating Multi Access Interactive Network
DOP Dilution Of Precision
DOSdisk operating system or denial of service
DoS denial of service
DOS Disk Operating System
DOV Data-Over-Voice
DPA Document Printing Application
DPC Destination Point Code
DPF Database Partitioning Feature
DPI deep packet inspection
DPI Distributed Protocal Interface
dpi Dots Per Inch
DPMA Dynamic Power Management Architecture
DPMI Dos Protected Mode Interface
DPMSdisplay power management signaling
DPN Data Packet Network
DPtoTP Display Coordinates TO Tablet Coordinates
DPV Distributed Partitioned View
DPW Digital Pulse Wireless
DQM Data Quality Manager
DR disaster recovery
DRAC Dell Remote Assistant Card
DRAMdynamic random access memory
DRAM Dynamic Random Access Memory
DRAM Dynamic random-access memory
DRDADistributed Relational Database Architecture
DRE Document Rendering Engine
DRF Data Recovery Field
DRi Disaster Recovery Institute
DRM Data Relationship Management
DRM digital rights management
DROP delivery of real-time execution information protocol
DRP Disaster Recovery Plan
DRP Distribution and Replication Protocol
DRU Disc Remastering Utility
DRW Defect Remediation Window
DS Differentiated Service
DS0 Digital Subscriber Level Zero
DS1 Digital Signal Level 1
DSA Digital Signature Algorithm
DSA Distributed Systems Architecture
DSAP Destination Service Access Point
DSBM Designated Subnet Bandwidth Manager
DSE Directory Services Environment
DSI Dynamic Systems Initiative
DSLdigital subscriber line
DSL Digital Subscriber Line
DSL Domain-Specific Language
DSL Dual Stress Liner
DSLAM Digital Subscriber Line Access Multiplexor
DSLAM DSL Access Multiplexer
DSM dependency structure matrix
DSM-CC Digital storage media command and control
DSML Directory Service Markup Language
DSN dealer software network
DSn digital signal level n
DSO data source object
DSOM Distributed System Object Model
DSP digital signal processor
DSR Data Set Ready
DSR Dynamic Source Routing
DSS igital Signature Standard
DSSA Distributed System Security Architecture
DSSS Direct Sequence Spread Spectrum
DSTN Double-layer Supertwist Nematic
DSTP Data Space Transfer Protocol
DSUDigital service unit
DSU data service unit
DSU Digital Service Unit
DSVD Digital Simultaneous Voice and Data
DSX Digital System Cross-connect frame
DTDDocument Type Definition
DTD Document Type Definition
DTDS Disaster Tolerant Disk Systems
DTEData terminal equipment
DTE Data Terminal Equipment
DTM Document Table Model
DTM Dynamic synchronous Transfer Mode
DTMF Data Tone Multiple Frequency
DTML Document Template Mark-up Language
DTN Disruption Tolerant Networking
DTP Desktop publishing
DTR Data Terminal Ready
DTS Digital Theater System
DTTV Digital Terestial Televison
du disk usage
DUAL Diffusing Update Algorithm
DUL Dial Up List
DUNDial up networking
DUN Dial-Up Networking
DUNS Data Universal Numbering System
DUOW / DUW distributed unit of work
DUPS Digital Unbundled Port Services
DUV Data Under Voice
DVB-H Digital Video Broadcasting - Handhelds
DVBMHP Digital Video Broadcasting Multimedia Home Platform
DVB-SH Digital Video Broadcasting - Satellite services to Handhelds
DVCD Double Video CD
DVDdigital video disc or digital versatile disc
DVD Digital Versatile Disc
DVD-Rdigital video disc-recordable
DVD-RAMdigital video disc-random access memory
DVD-ROMdigital video disc-read only memory
DVD-RWdigital video disc-rewritable
DVIdigital visual interface
DVI Digital Video Interface, originally Digital Video Disc
DVMDigital volt meter
DVMRP Distance Vector Multicast Routing Protocol
DVRs Digital video/Versatile recorders
DWDM dense wave division multiplexing
DWF Design Web Format
DWM Desktop Windows Manager
DWS Dialable Wideband Service
DX DirectX / Direct X
dxdiag directx diagnostics
DXF Drawing Interchange Format
DXI Data Exchange Interface
dyld dynamic link editor
e- Electronic
E Phone Emergency Phones.
E&M recEive and transMit (or ear and mouth)
E_D_TOV error detect timeout value
E2E End-to-End
E3 Electronic Entertainment Expo
EA Electronic Arts
EA Enterprise Agreement
EAB Enterprise Address Book
EAI Enterprise application integration
EAL Evaluation Assurance Level
EAM Event Aggregation Module
EAP Extensible Authentication Protocol
EAR Emergency Assistance Request
EARL Enhanced Address Recognition Logic
EAS enterprise application server
EASDAQ European Association of Securities Dealers Automated Quotations
EAT End Around Test
EAX Environmental Audio
EB Exabyte
EBCDIC Extended Binary Coded Decimal Interchange Code
EBIF Enhanced TV Binary Interchange Format
EBML Extensible Binary Meta Language
EBPP Electronic Bill Presentation and Payment
EBS E-Business Suite
EC2 Elastic Compute Cloud
ECB electronic code book
ECB Event Control Block
ECCerror correction code
ECC elliptic curve cryptography
ECC Error Checking and Correction
ECEM enterprise carbon and energy management
ECHS Extended Cylinders, Heads, Sectors
eCI eCommerce integrator
ECM Enterprise content management
ECMA European Computer Manufacturers Association
ECMP Equal Cost Multipath Routing
ECO Engineering Change Order
ECPextended capabilities port
ECP electronic check presentment
ECS Extended Character Set
ECTF Enterprise Computer Telephony Forum
ED2K eDonkey2000
EDA event-driven architecture
EDC Electronic Data Capture
EDC electronic dispersion compensation
EDGE Enhanced Data Rates for GSM Evolution
EDI electronic data interchange
EDIFACT Electronic Data Interchange For Administration, Commerce and Transport
e-discovery Electronic discovery
EDM Electronic Document Management
EDM EMC Data Manager
EDO Extended Data Output
edress e-mail address
EDS Electronic Data Systems
EDW enterprise data warehouse
EEPROMelectrically erasable programmable read-only memory
EEPROM /EPROM Electrical Erasable Programmable Read Only Memory
EF Expedited Forwarding
EFI Extensible Firmware Interface
EFM Enterprise fraud and misuse management
EFSencrypting file system
EFS Encrypting File System
EFS Error Free Seconds
EFT Electronic Funds Transfer
EGA Enhanced Graphics Adapter
EGL Enterprise Generation Language
EGNOS European Geostationary Navigation Overlay Service
EGPExterior Gateway Protocol
EGP Exterior Gateway Protocol
EH&S Environmental, Health and Safety
EHA Ethernet Hardware Address
EHA Ethernet Hardware Address (MAC address)
EHR Electronic Health Record
EIAElectronic Industries Association
EIA Electronic Industries Alliance
EIA Electronics Industry Alliance
EIA enterprise information architecture
EIDEenhanced integrated drive electronics
EIGRP Enhanced Interior Gateway Routing Protocol
EII enterprise integration informationÂ
EIM Enterprise Identity Mapping
EIM enterprise information management
EIRP Effective Isotropic Radiated Power
EIS enterprise information system
EISAextended industry standard architecture
EIST Enhanced Intel SpeedStep Technology
EJB Enterprise JavaBeans
EKTS electronic key telephone set
ELAN Emulated Local Area Network
ELM Expertise location and management
ELT extract, load, and transform
EMA Enterprise Management Associates
EMC Electromagnetic Compatibility
EMF ElectroMagnetic Field
EMF ElectroMotive Force
EMIelectromagnetic interference
EMI Electromagnetic interference
EMI Enhanced Multilayer Image
EMPelectromagnetic pulse
EMPI Enterprise Master Patient Index
EMR electronic medical record
EMS Enhanced Messaging Service
EMS enterprise messaging system
EMS Expanded Memory Specification
EMV Europay-MasterCard-Visa
ENIW Web-enabled Ethernet Networking Interface
ENQ Enquiry
ENS enterprise nervous system
ENTL Electronic New Hire/Termination/Leave of Absence
ENUM electronic numbering / Electronic Number Mapping system
ENX European Network Exchange
EOF End Of Frame (HDLC, etc.)
EOF end-of-file
EOL End Of Life
EoS / EoSDH Ethernet over SONET / Ethernet Over SDH
EPABX Electronic Private Automatic Branch Exchange
e-paper Electronic paper
ePC electronic product code
EPG(s) electronic program guides
EPGs electronic program guides
EPIC Explicitly Parallel Instruction Computing
EPL Ethernet Private Line
EPM Enterprise Performance Management
EPN Extended Port Network
EPO emergency power off
ePO EPolicy Orchestrator
EPOC Electronic Piece of Cheese
EPPenhanced parallel port
EPP Enhanced Parallel Port
EPP Enterprise Portal Platform
EPR Electronic Patient Record
EPR EndPoint Reference
EPROMerasable programmable read-only memory
EPS Encapsulated PostScript
EPS Events Per Second
EPU Energy Processing Unit
ERDemergency repair disk
ERL Echo Return Loss
ERMS electronic records management systems
ERP Enterprise resource planning
ERP error recovery procedure
eRX e-Prescribing
ESA Enthusiast System Architecture
ESB enterprise service bus
ESCD Extended System Configuration Data
ESCON Enterprise Systems Connection
ESDelectrostatic discharge
ESDIenhanced small device interface
ESDI Enhanced Small Device Interface
ESE Extensible Storage Engine
ESF Extended Superframe Format
ESG Enterprise Strategy Group
ESI Edge Side Include
ES-IS End System to Intermediate System
ESL electronic shelf labels
ESM Enterprise Security Manager
ESM Enterprise Service Management
ESN electronic serial number
ESP Encapsulated Security Payload
ESP estimated street price
ESPN Entertainment and Sports Programming Network
ESRB Entertainment Software Rating Board
ESS employee self-service
ESS Extended Service Set
ESS Extended service set (Wi-Fi group)
ETA Embedded Transport Acceleration
ETAS Encrypted Transaction Audit System
ETC Enhanced Throughput Cellular
etc Essential Text Configuration
ETL Extract, Transform and Load
ETN electronic tandem network
ETRN Extended Turn
ETSI European Telecommunications Standardisation Institute
ETTb/ETTh Ethernet To The Business/Home
ETX end-of-text character
EUC Extended UNIX Code
EUEM end user experience monitoring
EULA End-User License Agreement
EUP Enterprise Unified Process
Eutelsat European Telecommunications Satellite Organization
EVA Enterprise Virtual Array
EVDOevolution data optimized or evolution data only
EVDO Evolution Data Only/Evolution Data Optimized
EVGAextended video graphics adapter/array
EWS Early Warning Status
EX exchange
EXE EXEcutable
EXIF EXchangeable Image File format
FA Foreign Agent
FACCH Fast Associated Control Channel
FAN File Area Network
FAQ Frequently Asked Questions
FAR false acceptance rate
FARE Film Automatic Retouching and Enhancement
FASS Fast Access Station Switching
FAST Federation Against Software Theft
FAST File And Settings Transfer
FATfile allocation table
FAT file allocation table
FAT1212-bit file allocation table
FAT1616-bit file allocation table
FAT3232-bit file allocation table
favicon favorites icon
FAW Frame Alignment Word
FBA fixed-block architecture
FBD Fully Buffered DIMM
FBGA Fine-pitch Ball Grid Array
FBSS Fast Base Station Switching
FC / FCS Fibre Channel (Standard)
FC-AL Fibre Channel Arbitrated Loop
FCC Federal Communications Commission
FCC Federal Communications Commission (US)
FCCH Frequency Correction Channel
FCD Floating car data or floating cellular data
FCH Frame Control Header
FCIP Fibre Channel over Internet Protocol
FCL Framework Class Library
FCoE Fibre Channel over Ethernet
FCP Fibre Channel Protocol
FCPGA Flip Chip Pin Grid Array
FCS Fluorescence Correlation Spectroscopy
FCS Frame Check Sequence
FCS Frame check sequence (Ethernet)
FCSI Fibre Channel Systems Initiative
FDDfloppy disk drive
FDD Frequency Division Duplex
FDDIFiber Distributed Data Interface
FDDI Fiber Distributed Data Interface
FDE Full-disk encryption
FDM Feature Download Management
FDM Frequency Division Multiplexing
FDM fused deposition modeling
FDS Fraud Detection System
FDX Full Duplex
FE Fast Ethernet
FE field engineer
FEC Fast Etherchannel
FEC Forward Error Correction
FECN Forward Explicit Congestion Notification
FEFO First Ended, First Out
FEMA Failure mode and effects analysis
FEP Front-End Processor
FER Frame Erasure/Error Rate
FERPAFamily Educational Rights and Privacy Act
FERPA Family Educational Rights and Privacy Act
FET field effect transistor
FEXT Far End Cross Talk
FFD Flicker Free Display
FFPF fairly fast packet filter
FFT Fast Fourier Transform
FGA/B/C/D feature group A/B/C/D
FHS Fan Heat-Sink
FHSS Frequency Hopped Spread Spectrum
FICON Fiber Connection
FIDNET Federal Intrusion Detection Network
FIFO first in, first out
FIGS Figures Shift
FIM federated identity management
FINDDEST Find Destination
FINRA Financial Industry Regulatory Authority
FiOS Fiber Optic Service
FIPS Federal Information Processing Standards
FIR Finite Impulse Response
FIRST Forum of Incident Response and Security Teams
FISMA Federal Information Security Management Act
FIX Financial Information Exchange
FLAC Free Lossless Audio Codec
FLAG Fiber Link Around the Globe
FLOGI fabric login
FLOPS Floating Point Operations Per Second
FM Frequency Modulation
FM-200 Firemaster / Fire Master 200
FMA99 Financial Services Modernization Act of 1999
FMC fixed-mobile convergence
FMEA Failure Mode and Effects Analysis
FMH function management header
FMV Full-Motion Video
FnFunction (referring to the function key on a laptop)
FOC Field Oriented Control
FoIP Fax Over Internet Protocol
FOIRL FiberOptic InterRepeater Link
FOMA Freedom of Mobile Multimedia Access
FOP Formatting Objects Processor
FORTRAN formula translation
FOSS Free and open source software
FOSSIL Fido Opus Seadog Standard Interface Layer
FOT Fiber Optic Terminal
FOTS Fiber Optic Transmission System
FPA Floating Point Accelerator
FPA Function point analysis
FPE Forefront Protection for Exchange
FPGA Field Programmable Gate Array
FPMfast page-mode
FPM Fast Page Mode
FpML Financial Products Markup Language
FPP Full Product Package
FPS Flexible Payments Service
FPS frames per second
FPU floating point unit
FQDNfully qualified domain name
FQDN Fully Qualified Domain Name
FR frame relay
FRAD Frame Relay Access Device
FRAG (21) Financial Reporting & Auditing Group Guidelines
FRDS Failure Resistant Data Systems
FRED Fair Random Early Detection
FreeBSD Free Berkeley Software Distribution
freeware free software
FRR fast retransmit and recovery
FRS File Replication Service
FRUfield replaceable unit
FRU field-replaceable unit
FSAA Full Screen Anti-Aliasing
FSAM Federated Storage Area Management
FSB frontside bus
FSM finite state machine
FSML Financial Services Markup Language
FSMO Flexible Single Master Operations
FSN Full-Service Network
FSPF fibre channel shortest path first
FSS File system server
FSSS Fast Serving Station Switching
FSTC Financial Services Technology Consortium
FTP file transfer protocol
FTA failure to acquire
FTAM File Transfer Access and Management
FTAM File Transfer, Access, and Management
FTBFS Fails To Build From Source
FTDS Failure Tolerant Data Systems
FTL Flash Translation Laye
FTNS Fixed Telecommunication Network Services
FTPFile Transport Protocol
FTP File Transfer Protocol
FTTB Fiber to the building
FTTN Fiber to the neighborhood
FUD Fear, Uncertainty, and Doubt
FUSC Fully Used SubChannel
FW Firewall
FWA Fixed wireless access
FX foreign exchange
FXO Foreign Exchange Office
FXP File eXchange Protocol
FXP Foreign Exchange Protocol
FXP fxp
FXS Foreign Exchange Station
G giga
G2C Government to Citizen
GAIA GUI Application Interoperability Architecture
GAMS General Algebraic Modeling System
GAP Groups, Algorithms and Programming
GAPE Google Apps Premier Edition
GARP Generic Address Resolution Protocol
Gas GNU Assembler
gb Giga bit
GB Gigabyte
GBIC Gigabit interface converter
GBP group buffer pool
Gbps Gigabit per second
Gbps gigabits per second
GCC GNU Compiler Collection
GCD Grand Central Dispatch
GCG Grey Component Replacement
GCGID graphic character global identifier
GCI General Communication Inc.
GD&T geometric dimensioning and tolerancing
GDB GNU debugger
GDIgraphics device interface
GDI Graphics Device Interface
GDM global delivery model
GDP Gateway Discovery Protocol
GDPS Geographically Dispersed Parallel Sysplex
GDS Global data synchronization
GDSN Global Data Synchronization Network
GDTs Global data types
GEAR Gigabyte Enhanced Agp Riser
GEDCOM GEnealogical Data COMmunication
GEMMS Global Enterprise Manufacturing Management System
GEnie General Electric Network for Information Exchange
GEO / GEOS Geo-Stationary Earth Orbit System
GEOS graphic environment operating system
GEPOF Gigabit Ethernet (over) Plastic Optical Fiber
GERAN GSM(GPRS)/EDGE Radio Access Network
gfortran GNU Fortran compiler
GFP Generic Framing Procedure
GFS Grandfather, Father, Son
GGP Gateway-gateway protocol
GGSN Gateway GPRS Support Node
GHC Glasgow Haskell Compiler
Ghost General Hardware-Oriented Software Transfer
GIAC Global Information Assurance Certification
GiB / gib gibibyte
GID group identification number
GIF Graphic Interchange Format
GIFT GNU Image Finding Tool
GIGO Garbage In, Garbage Out.
GIMP Gnu Image Manipulation Program
GINA Graphical Identification and Authentication
GINI Gateway Interface for Network Initialization
GIOP General Inter-ORB Protocol
GIS Geographical Information System
GIX Global Internet eXchange
GKTMP Gatekeeper Transaction Message Protocol
GLA Generic Log Adapter
GLB / GLBA Gramm-Leach-Bliley (Act)
GLONASS Global Navigational Satellite System
GLPK GNU Linear Programming Kit
GLUT openGL Utility Toolkit
GMA Gmail Drive
GMM GPRS Mobility Management
GMR Giant Magneto Resistance
GMRP Garp Multicast Registration Protocol
GMRS General Mobile Radio Service
GMS General MIDIStandard
GMS generalized main scheduling
GMS Global Messaging Service
GMS Google Message Security
GMSK Gaussian Minimum Shift Keying
GMX Global Mail eXchange, in Germany: Global Message eXchange
GNAT GNU NYU Ada Translator
GNN Global Network Navigator
GNOME GNU Network Object Model Environment
GNSO Generic Names Supporting Organization
GNU GNU’s not Unix
GOCA Graphic Object Content Architecture
GOLC Growth Opportunity License Charge
GOMS Goals, Operators, Methods, and Selection rules
GOPS Giga (billion) Operations Per Second
GOS Grade of Service
GOSIP Government OSI Profile
GOW Gears of War
GOW God of War
GPF General Protection Fault
GPIO general-purpose I/O
GPL General Public License
GPO Group Policy Object
GPRSgeneral packet radio system
GPRS general packet radio service
GPS Global Positioning System
GPS GNAT Programming Studio
GPSL General Purpose Scripting Language
GPSS General Purpose Simulation System
GPU Graphics Processing Unit
GPWW group practice without walls
GRC governance, risk and compliance
GRC.SQ Governance, Risk Management, Compliance, Security, and Data Quality
GRCM GRC management
GRE generic routing encapsulation
grep global-regular-expression-print
GROW GNU Remote Operations Web
GRT Granular Recovery Technology
GSAM generalized sequential access method
GSC Gecko System Connect
GSI Gigascale Integration
GSK Global Security Kit
GSMglobal system for mobile communications
GSM Global System for Mobile communication
GSO global sign-on
GSR Gigabit Switch Router
GTL Gunning Transceiver Logic
GTM global trade management
GTM Global Traffic Manager
GTP GPRS Tunneling Protocol
GTS Generic Traffic Shaping
GTT Global Title Translation
GUA graphical user authentication
GUIgraphical user interface
GUI Graphical User Interface
GUID Globally Unique Identifier
GUTBN Globally Unique Time Based Number
GVN Global value numbering
GVPN Global Virtual Network Service
GVRP Generic VLANResolution Protocol
GVU Graphic, Visualization, and Usability
GWEN Ground Wave Emergency Network
GWT Google Web Toolkit
GXA Global XML Web Services Architecture
GXS Global exchange services
gzip GNU zip
H&H Hoot & Holler
H/S LAN High-Speed Local-Area Network
H3C (previous) Huawei Technologies - 3Com
HA high availability
HAAT Height Above Average Terrain
HACMP High-Availability Cluster Multi-Processing
Hactivism from ‘hack’ and ‘activism’
HAD Holographic Autostereoscopic Display
HADR high availability disaster recovery
HAE Height Above Ellipsoid
HALhardware abstraction layer
HAL Hardware Abstraction Layer
HAN home area network
HARC Hitachi Asynchronous Remote Copy
HARQ Hybrid Automatic Repeat reQuest
HASP Houston Automatic Spooling Program
HAT Heap Analysis Tool
HAVi Home Audio Video interoperability
HBA host bus adapter
HCI Host Controller Interface
HCI Human-Computer Interaction
HCLhardware compatibility list
HCL Hardware Compatibility List
HCM human capital management
HCO High-Capacity Optical
HCR Huffman Codeword Reordering
HCT hardware compatibility tests
HD / HDD Hard Disk Drive
HD DVD high-density DVD
HDA Head Disk Assembly
HDCP High-bandwidth Digital Content Protection
HDDhard disk drive
HDLC High Level Data Link Control
HDLC High-level Data Link Control
HDMihigh definition media interface
HDMI High-Definition Multimedia Interface
HDML Handheld Device Markup Language
HDR header label
HDR High-dynamic-range imaging or High-dynamic-range rendering
HDR host-discovered resource
HDS Hitachi Data Systems
HDSL High bit-rate Digital Subscriber Line
HDTP Handheld Device Transport Protocol
HDTV High Definition television
HDx / HD Half duplex
HE-AAC High Efficiency Advanced Audio Coding
HEC Header Error Control
HEL Hardware Emulation Layer
HEP horizontal enterprise portal
HERF high energy radio frequency
HFC Hybrid Fiber Coax
HFS Hierarchical File System
HFS+ Hierarchical File System Plus
HGFS Host-Guest File System
HGML Hypertext General Markup Language
HHO Hard Hand Off
HHT Hand-Held Terminal
HID High-Intensity Discharge
HID Human Interface Device
HIDAM hierarchical indexed direct access method
HIDS Host based Intrusion Detection System
HiFD HIgh-capacity Floppy Disk
HighMAT High-performance Media Access Technology
HIL Hardware-in-the-Loop
HIP Host Identity Protocol
HIPAA Health Insurance Portability and Accountability Act
HiPerLinks High-Performance Links
Hiperspace High-Performance Space
HIPPI HIgh Performance Parallel Interface
HIS healthcare information system
HISAM hierarchical indexed sequential access method
HITECH Health Information for Economic and Clinical Health
HIToolbox Human Interface Toolbox
HKCC HKey_Current_Config
HKLM HKey_Local_Machine
HL7 Health Level 7
HLA High Level Architecture
HLLAPI High Level Language Application Programming Interface
HLR Home Location Register
HMA High Memory Area
HMD Head Mounted Display
h-menu Hierarchical menu
HMP Hybrid Multiprocessing
Honeynet A network of honeypots.
HOSED Hardware Or Software Error Detected
HP Hewlett-Packard
HP HoneyPot
HPA High Performance Addressing
HPB High Ping Bastard
HPC High Performance Computing
HPF High Pass Filter
HPFShigh performance file system
HPFS High Performance File System
HPGL Hewlett-Packard Graphics Language
HPIB Hewlett Packard Interface Bus
HPNA Home Phoneline Networking Alliance
HPR High-Performance Routing
HR horizontal rule
HR/DSSS High Rate/Direct Sequence Spread Spectrum Physical Layer
HRAA High Resolution Anti Aliasing
HRC Hitachi Remote Copy
HRMS human resource management system
HRPD High Rate Packet Data
HSB / HSV Hue, Saturation, Brightness (or Value)
HSCSD High Speed Circuit Switched Data
HSD High Speed Data
HSDPA High-Speed Downlink Packet Access
HSF Heat Sink Fan
HSF High Sierra Format
HSIL Host Side Igmp Library
HSM Hardware Security Module
HSM Hierarchical storage management
HSO Hot Spot Operator
HSR Horizontal Scan Rate
HSRP Hot Standby Router Protocol
HSS Home Subscriber Service
HSSDC High Speed Serial Direct Connect
HSSI High Speed Serial Interface
HSUPA High-Speed Uplink Packet Access
HT Hyper-Threading
HT HyperTransport
HTC formerly High Tech Computer Corporation
HTMLhypertext markup language
HTML or HTM HyperText Markup Language
HTML5 HyperText Markup Language 5
HTT Hyper-Threading Technology
HTTPhypertext transfer protocol
HTTP HyperText Transfer Protocol
HTTP HyperText Transport Protocol
HTTPShypertext transfer protocol over secure sockets layer
HTTPS HyperText Transfer Protocol Secure
HTTPS Secured HTTP or HTTP Secure
HUD Head Up Display
HURSE Hasp Unit Record SErvice
HWS high watermark setup
HXRC Hitachi Extended Remote Copy
Hz hertz
I/O Input/Output
I2 Internet2
I2C Inter-Integrated Circuit
I²C Inter-Integrated Circuit
IA-32/64 Intel Architecture - 32/64
IaaS integration as a service
IABInternet Architecture Board
IAB Internet Architecture Board (previous Internet Activities Board)
IAD integrated access device
IAM Identity and Access Management
iAMT Intel Active Management Technology
IANAInternet Assigned Numbers Authority
IANA Internet Assigned Number Authority
IANA Internet Assigned Numbers Authority
IAP Internet Access Provider
IAS Internet Authentication Service
IAT Inside Air Temperature
IB Interface Bus
IBG interblock gap
IBM International Business Machines
IBO industry business unit
IBR intelligent browser referencing
IBSG Internet Banking System Group
IBSG Internet Business Solutions Group
IBT IntelliLight Broadband Transport
IBT Internet Based Training
IC I see
IC Integrated Circuit
ICA Independent Computing Architecture
ICA International Compliance Association
ICANN Internet Corporation For Assigned Names and Numbers
ICC Internet Commerce Corporation
ICCs integration competency centers
ICDL International Computer Driving Licence
ICE in-circuit emulator
ICE information and content exchange
ICE Interactive Connectivity Establishment
ICF Internet Connection Firewall
ICI Information-centric infrastructure
ICI Interexchange Carrier Interface
ICM incentive compensation management
ICMPinternet control message protocol
ICMP Internet Control Message Protocol
ICMS incentive compensation management system
ICP Internet Content Provider
ICPP Intel Channel Partner Program
ICQ I Seek You
ICRintelligent character recognition
ICRA Internet Content Rating Association
ICSinternet connection sharing
ICS Incremental Change Synchronization
ICS Internet Connection Sharing
ICSA International Computer Security Association
ICSI Institute for Clinical Systems Improvement
ICT information and communication technology
ICU International Components for Unicode
ID identifier
IDA (Verizon) Internet Dedicated Access
IDARS integrated document archive and retrieval system
IDC Internet data center
IDD international direct dial / dialing
IDEintegrated drive electronics
IDE Integrated Development Environment
IDE integrated drive electronics
IDEA International Data Encryption Algorithm
I-DEAS Integrated-Design Engineering Analysis Software
IDEMA International Disk drive Equipment and Materials Association
iDEN integrated digital enhanced network
IDF Intermediate distribution frame
IDIM Identity Information Management
IDIOT Intrusion Detection In Our Time
IDIQ indefinite delivery/indefinite quantity;
IDL Interface Definition Language
IDM Internet Download Manager
IDOL Intelligent Data Operating Layer
IDOM integrated document and output management
IDQ Informatica Data Quality
IDR Intelligent Disaster Recovery
IDS Intrusion Detection System
IDT (originally) International Discount Telecommunications
iDTV Interactive digital television
IDU interface data unit
IE Internet Explorer
IEC Commission Electrotechnique Internationale (French)
IEC Inter-exchange Carrier
IEC International Electrotechnical Commission
IEE Institution of Electrical Engineers
IEEEInstitute of Electrical and Electronics Engineers
IEEE Institute for Electrical and Electronic Engineers
IEEE Institute of Electrical and Electronics Engineers
IES Integrated Environmental Solutions
IETFInternet Engineering Task Force
IETF Internet Engineering Task Force
IFB Internet Free/Busy
iFCP Internet Fibre Channel Protocol
IFL Integrated Facility for Linux
iFrame inline frame
IFRS International Financial Reporting Standards
IGF Internet Governance Forum
IGMPInternet Group Management Protocol
IGMP Internet Group Management Protocol
IGP interior gateway protocol
IGRP Interior Gateway Routing Protocol
IGS IBM Global Services
IHS Integrated Heat Spreader
IHV Independent hardware vendor
IIOP Internet Inter-ORB Protocol
IISInternet Information Services
IIS Internet Information Server
IKE Internet Key Exchange
ILEC Independent Local Exchange Carrier
ILEs Immersive learning environments
ILM IBM License Manager
ILM Information Lifecycle Management
iLO Integrated Lights-Out
ILP initial loader program
IM Identity Management
IM Instant Messaging
IMAC installations, moves, adds and changes
IMAPinternet mail access protocol
IMAP Internet Message Access Protocol
IMAP4Internet Mail Access Protocol version 4
IMAPI Image Mastering Application Programming Interface
IMC Intelligent Management Center
IMC Internet Mail Consortium
IME Input Method Editor
IMEI International Mobile Equipment Identifier
IMS Information Management System
IMS IP multimedia systems
IMSI International Mobile Subscriber Identity
IMUX Inverse Multiplexer
INAP Intelligent Network Application Protocol
INC International Network of Crackers
InfoSec Information Security
INI file initialization file
Inmarsat International Maritime Satellite Organization
INTAP Interoperability Technology Association for Information Processing
Intel INTegrated ELectronics
InterNIC Internet Network Information Center
IOA input/output adapter
IOCA Image Object Content Architecture
IOD in-order delivery
iODBC Independent Open DataBase Connectivity
IOM Integrated Object Model
IONL Internal Organization of the Network Layer
IOP Interoperability
IOPS Input/Output operations per second
IOS international operator services (IOS Telecom)
IoS Internet over Satellite
IOS Internetwork Operating System
iOS iPhone OS
IoT Internet of Things
IOTP Internet Open Trading Protocol
IPinternet protocol
IP Intellectual Property
IP Internet Protocol
IP address /number Internet Protocol addresss /number
IP PBX Internet Protocol private branch exchange
IP telephony Internet Protocol telephony
IPA intelligent process automation
IPAM Intellectual property asset management
IPAM IP Address Management
IPC interprocess communication
IPCONFIGinternet protocol configuration
IPL initial program load
IPL / IPLC international private line / international private leased circuit
IPM Internetwork Performance Monitor
IPMX IP management exchange
I-PNNI Integrated Private Network-Network Interface
IPPinternet printing protocol
IPP Internet Printing Protocol
IPPP Internet presence provider and promoter
IPR Intellectual Property Rights
IPRM intellectual property rights management
IPRR Intellectual property rights and royalties
IPS Intrusion prevention system
IPSECinternet protocol security
IPSec IP Security
IPT Identity Protection Technology
IPT IP telephony
IPTV Internet Protocol Television
IPv4 Internet Protocol, version 4
IPv6 Internet Protocal version 6
IPv6CP IPv6 PPP Control Protocol
IPXinternetwork packet exchange
IPX Internetwork Packet Exchange
IPX/SPXinternetwork packet exchange/sequenced packet exchange
IR InfraRed
IR Internet Registry
IRC Internet Relay Chat
IrDAInfrared Data Association
IRF Intelligent Resilient Framework
iRMC Integrated Remote Management Controller
IRP I/o Request Packet
IRQinterrupt request
IRQ Interrupt Request
IRS Interrupt Source
IRTFInternet Research Task force
IRTF Internet Research Task Force
IRU Indefeasible Right of Use
IS Information Systems
ISAIndustry Standard Architecture
ISA Industry Standard Adapter
ISA Internet Security and Acceleration
ISACA Information Systems Audit and Control Association
ISAKMPInternet Security Association and Key Management Protocol Authentication
ISAM Indexed Sequential Access Method
ISATAP Intra-Site Automatic Tunnel Addressing Protocol
ISC Internet Software Consortium
iSCSI Internet SCSI
ISDNIntegrated Services Digital Network
ISDN Integrated Services Digital Network
ISIS Image and Scanner Interface Specification
IS-IS Intermediate System to Intermediate System (routing protocol)
IS-IS Intermediate-System-to-Intermediate-System
ISL inter-switch link
ISM industrial, scientific and medical
ISN Initial Sequence Numbers
ISOIndustry Standards Organization
ISO International Organization for Standardization
ISOCInternet Society, promotes internet policies
ISOC Internet SOCiety
ISPInternet Service Provider
ISP Internet service provider
ISR interrupt service routine
ISS Internet Security Systems
ISSAC Information System for Advanced Academic Computing
ISTG InterSite Topology Generator
ISV independent software vendor
IT Information Technology
ITAD IT asset disposition
ITAM IT asset management
ITC IT consolidation
ITCAM IBM Tivoli Composite Application Monitoring
ITCM IT Change Management
ITCS Intermodal Transport Control System
ITeS Information Technology Enabled Services
ITIL Information Technology Infrastructure Library
ITL Instructional Technology Lab
ITLA Incremented Three Letter Acronym
ITO IT outsourcing
ITOM IT operations management
ITUInternational Telecommunication Union
ITU International Telecommunication Union
ITU-T International Telecommunications Union
ITWAB IT Workload Automation Broker Tools
ITXC Internet Telephony Exchange Carrier
IVANS International Value Added Network Services
IVDT Integrated Voice and Data Terminal
IVIS in-vehicle information system
IVR interactive voice response
IXC Interexchange Carrier
IXS Integrated xSeries Server
J2EE Java 2 Platform, Enterprise Edition
J2ME Java 2 platform, Micro Edition
J2SE Java 2 platform, Standard Edition
JAAS Java Authentication and Authorization Service
JACK JACK Audio Connection Kit
JAD joint application development
JAMES Java Apache Mail Enterprise Server
JAR Java Archive
JBIG Joint Bi-level Image experts Group
JBL Jame B. Lansing
JBOD Just a Bunch of Disks
JCA Java Connector Architecture
JCAHO Joint Commission on Accreditation of Healthcare Organizations
JCB job control block
JCL Job Control Language
J-code Japan code
JCP Java Community Process
JDBC Java DataBase Connectivity
JDK Java Development Kit
JEDEC Joint Electronic Devices Engineering Council
JES Job Entry Subsystem
JFK Just Fast Keying
JFS Journaling File System
JIA Joint Innovation Assessment
JIT Just-in-time
JITA Just In Time Activation
JITT just-in-time training
JJ Josephson Junction
JMS Java Messaging Service
JNI Java Native Interface
JOA Joint Opportunity Assessment
JOLAP Java Interface for OLAP
JPDL jBoss process definition language
JPEG / JPG Joint Photographic Experts Group
JRE Java Runtime Environment
JS JavaScript
JSON JavaScript Object Notation
JSP Java Server Page
JTAG Joint Test Action Group
JTC Join Transitive Closure
JTC1 Joint Technical Committee
JTRS Joint Tactical Radio System
JVM Java virtual machine
JVT job volume table
k kilo
kaid Kai console daemon
Kb Kilobit
kB Kilobyte
KBE knowledge-based engineering
KBMS KeyBoard/MouSe
kbps Kilobit per second
Kbps Kilobits Per Second
KBS Knowledge-Based System
KBW keyboard wedge
KCC Knowledge Consistency Checker
KDC Key Distribution Center
KDD Knowledge Discovery in Databases
KDE K Desktop Environment
KDSI thousand (K) Delivered Source Instructions
keychan Key changer
keygen Key Generator
keylogging keystroke logging
KGD Known Good Die
KiB kibibyte
KIPS Thousands of instructions per second
KIS Knowbot Information Service
KISS Keep It Simple, Stupid
KLOC thousands of lines of code
KM knowledge management
k-map knowledge map
KML Keyhole Markup Language
KMS Key Management Server
KMS Knowledge Management System
KNI Katmai New Instructions
knowbot Knowledge robots
KOLs Key opinion leaders
KPCMS Kodak Precision Color Management System
KPI key performance indicator
KPN (formerly) Koninklijke PTT Nederland
KPO Knowledge Processing Outsourcing
KSAM Keyed Sequential Access Method
ksh Korn shell
KSR Keyboard Send/Receive
KSU Key Service Unit
KTM kernel transaction manager
KTS Key Telephone System
KUIP Kernel User Interface Package
KVA Kilo Volt Amp
KVM K Virtual Machine
KVM Keyboard, Video, and Mouse
kW kilowatt
KWH KiloWatt Hour
KYC Know Your Customer
L1 / L2 cache level-1/2 cache
l10n localization
L2CAP Logical Link and Control Adaptation Protocol
L2FLayer2 Forwarding
L2F Layer 2 Forwarding
L2S Layer 2 Switch
L2TPLayer 2 tunneling protocol
L2TP Layer 2 Tunneling Protocol
L3F Layer 3 Forwarding
L3S Layer 3 Switch
L3TP Layer Three Tunneling Protocol
LA Load Address
LAC L2tp Access Concentrator
LACNIC Latin American and Caribbean Internet Addresses Registry
LACP Link Aggregation Control Protocol
LADDR Layered Device Driver
LAI Location Area Identity
LAIPE Link And In Parallel Execute
LAMP Linux, Apache, MySQL and PHP
LANlocal area network
LAN Local area network
LANE Local Area Network Emulation
LAPB Link Access Procedure, Balanced (x.25)
LAPD Link Access Procedures on the D channel
LAPF Link-access procedure for frame relay
LAS logical application structure
laser light amplification by stimulated emission of radiation
LASINT laser intelligence
LAT Local Address Table
LATA Local Access and Transport Area
LBAlogical block addressing
LBA Logical Block Addressing
LBAC label-based access control
LBG load balancing group
LBO line buildout
LBS Location-based service
LCLucent connector
LCC Limited combustible cable
LCC / LLCC Leaded Chip Carrier / Leadless Chip Carrier
LCDliquid crystal display
LCD liquid crystal display
LCI local component installer
LCM Life Cycle Management
LCN local communication network
LCO language context object
LCOS Liquid Crystal On Silicon
LCP Link Control Protocol
LCR least cost routing
LCR Lifetime Clinical Record
LCR Line Concentration Ratio
LCR Local Continuous Replication
LCS Communications Server
LCS Liquid Cooling System
LD Laser Disc
LDALocal delivery agent
LDA Local delivery agent
LDAPlightweight directory access protocol
LDAP Lightweight Directory Access Protocol
LDCM LANDesk Client Manager
LDIF LDAP Data Interchange Format
LDM limited distance modem
LDP Label Distribution Protocol
LDPC low-density parity-check code
LDR Light Dependent Resistor
LDS logical data stream
LDT Lightning Data Transfer (Bus)
LEAP Lightweight Extensible Authentication Protocol
LEDlight emitting diode
LED light-emitting diode
LEED Leadership in Energy and Environmental Design
LEL Link, Embed and Launch-to-edit
LEO Low Earth Orbit
LER Label Edge Router
LF Line Feed
LFB look-ahead-for-busy
LFS Linux From Scratch
LGA Land Grid Aray
LGPL Lesser General Public License (GNU)
LID local identifier
LIDE Light emitting diode In-Direct Exposure
LIFO last in, first out
LINAC Linear Accelerator
LION Lower Indian Ocean Network
Lion / Li-ion Lithium-ion
LIPor LiPoly lithium-ion polymer
LIP Loop Initialization Process
LIPS Logical Inferences Per Second
LIS Laboratory information system
Lisp List Processor or List Processing
LKM Loadable Kernel Modules
LL local loop
LLC Logical link control
LLDP Link Layer Discovery Protocol
LLDP-MED Link Layer Discovery Protocol-Media Endpoint Discovery
LLI Low Latency Interrupts
LLI Lower Layer Interface
LLTD Link Layer Topology Discovery
LLU local loop unbundling
LMA Lightspeed Memory Architecture
LMDS Local Multipoint Distribution Services
LMP Link Manager Protocol
LMPP Lighttpd/MySQL/PHP/Python
LMS Learning Management System
LNA launch numerical aperture
LNA Low Noise Amplifier
LNIB like new, in box
LNO Loop Nest Optimization
LNP Local Number Portability
LNS L2tp Network Server
LOB large object
LOB Line-of-Business
LOC Lines of Code
LOCK local object creator and killer
LODA Lombardi On-Demand Assistance
LOFS LOopback File System
LOM LAN On Motherboard
Loran long-range radio navigation
LOS Line of Sight
LOS Loss of signal
LPA Linear Power Amplifier
LPA link pack area
LPAR / LP logical partition
LPB Low Ping Bastard
LPC Linear Predictive Coding
LPC Local Procedure Call
LPD line printer daemon
LPD/LPRline printer daemon / line printer remote
LPDA Link Problem Determination Aid
LPF League for Programming Freedom
LPF Low-Pass Filter
LPFM low-power FM radio
LPI lines per inch
LPI Linux Professional Insitute
LPP Land Pre-Pits
LPPL Latex Project Public License
LPR line printer requester
LPTline printer terminal
LPT line print terminal
LPT1line printer terminal 1
LPTV low-power television
LPWA Lucent Personalized Web Assistant
LPXlow profile extended
LPX Low Profile eXtension / Extended
LQA link quality analysis
LQSR Link Quality Source Routing
LR Lightroom
LRC longitudinal redundancy check
LRC Loop Resiliency Circuit
LRF Little Rubber Feet
LRN Location Routing Number
LRU least recently used
LS Loop-Start Signaling
LSA Local Security Authority
LSAP Link Service Access Point
LSAS Local Security Authentication Server
LSASS Local Security Authority Subsystem Service
LSB Least Significant Bit
LSH Locality-Sensitive Hashing
LSI Large Scale of Integration
LSM Linux Software Map
LSM Local Service Manager
LSP License Service Provider
LSR label switch router
LSR Leaf Setup Request
LSR Line Service Request
LSR Local Service Request
LSR local shared resource
LSSGR LATA Switching System Generic Requirements
LTC line traffic coordinator
LTE Lite Terminating Equipment
LTE Long-Term Evolution
LTF Leap To Frogans
LTM Local Traffic Managers
LTPA Lightweight Third Party Authentication
LTRAN local transaction
LTRS Letters Shift
LTS Leaning Toothpick Syndrome
LULogical Units
LU Logical Unit
LUF lowest usable high frequency
LU-LU between two logical units
LUN logical unit number
LUNT line unit network termination
LUS LookUp Service
LUW logical unit of work
LVDlow voltage differential
LVD Low Voltage Differential
LVDS Low Voltage Differential Signaling
LVM Logical Volume Manager
LVM Low Voltage Differential Signaling
LVOL / LV logical volume
LWL long wavelength
LWP light-weight process
LZH Lempel-Ziv-Haruyasu
LZW Lempel Ziv Welch
M/L Mobile-to-Land Traffic
M2M Manufacturer-to-Manufacturer
M2M model-to-model
MAA Mail access agent
MACmedia access control
Mac Macintosh
MAC Media access control
MAC message authentication code
MAC Mid-Atlantic Crossing
MADM Multiple Appearance Directory Number
MAE Metropolitan Area Exchange and/or Ethernet
MAGs Multichannel access gateways
mAH milliampere-hour or milliamp-hour
MAID massive array of idle disks
Malware Malicious Software
MANmetropolitan area network
MAN Metropolitan area network
MANET Mobile Ad Hoc Network
MAP Major Sync Point
MAP Manufacturing Automation Protocol
MAP Mobile Application Part
MAPImessaging application programming interface
MAPI Messaging Application Programming Interface
MAPP Microsoft Active Protections Program
MAPS Mail Abuse Protection System
MARS Monitoring, Analysis and Response System
MARS Multicast Address Resolution Server
MARS Multivariate Adaptive Regression Splines
MAS Modula-2 Algebra System
MASER Microwave Amplification by Simulated Emission of Radiation
MathML Mathematics Markup Language
MAU Medium Attachment Unit
MAU Multistation Access Unit
MAX Master Auxiliary Correction
Mb megabyte
Mbps Megabits per second
MBRmaster boot record
MBR Master Boot Record
MBS Maximum Burst Size
MBSAMicrosoft Baseline Security Analyzer
MBSA Microsoft Baseline Security Analyzer
MBT MB Technology
m-business mobile business
MC Multiple choice
MCA message channel agent
MCA Micro Channel Architecture
MCCM multichannel campaign management
MCIMicro-channel architecture
MCI Microwave Communications, Inc.
MCIF (IBM) Measured Capability Improvement Framework
MCL Mesh Connectivity Layer
MCM Multi-Chip Module
MCMP Multi-channel Multi-point
m-commerce mobile commerce;
MCP Microsoft Certified Professional
MCP Multi-chip package
MCRmultivariant curve resolution
MCR Maximum Cell Rate
MCSE Microsoft Certified Systems Engineer
MCU multipoint control unit
MD2/4/5 Message Digest algorithm 2/4/5
MDA approaches
MDA Model-driven architecture
MDA model-drivenÂ
MDB Message-Driven Beans
MDF Main distribution frame
MDF Medium Density Fiberboard
MDI Medium Dependent Interface
mdisk managed disk
MDIX medium dependent interface crossover
MDM master data management
MDM Meter Data Management
MDP Mobile Data Protection
MDS Master Data Service
MDX Multidimensional Expressions
ME Millenium Edition
MEMS micro-electromechanical systems
MEO Medium/Middle Earth Orbit
MERVA Message Entry and Routing with Interfaces to Various Applications
MES Manufacturing Execution Systems
MES Mobile Entertainment Service
MESA Manufacturing Enterprise Solutions Association
MFA Multifactor authentication
MFC Microsoft Foundation Class
MFDmulti-function device
MFD Multi Function Device
MFM modified frequency modulation
MFPmulti-function product
MFP multifunction product
MFS Multi-Function Security
MFT Managed file transfer
MFT Master File Table
MGAS mostly global address space
MGC Media Gateway Controller
MIA Media Interface Adapter
MIBManagement Information BASE
MIB Management Information Base
MIB Management information base (SNMP)
MiB mebibyte
MIC Message Integrity Check
MICR Magnetic Ink Character Recognition
MicroDIMMmicro dual inline memory module
MIDImusical instrument digital interface
MIDI Musical Instrument Digital Interface
MID-II Management Information DataBase II
MIH Master Information Hub
MII Medium Independent Interface
MII Microsoft/Intel/IBM
MILNET Military Network
MIMEmultipurpose internet mail extension
MIME Multipurpose Internet Mail Extensions
MIMO Multiple Input, Multiple Output
MIP Multum in Parvum (Latin) means ‘many in one’
MIPS Millions of Instructions Per Second
MIS management information systems
MISRA Motor Industry Software Reliability Association
MIT Massachusetts Institute of Technology
MITM Man In The Middle
ML Modular Line
MLHG Multi-Line Hunting
MLImultiple link interface
MLT Mechanized Loop Test
MMCMicrosoft management console
MMC Microsoft Management Console
MMC MutiMedia Card
MMDS multi-megabit data service
MMDS Multipoint Microwave Distribution System
MMF Multimode Fiberoptic Cable
MMO / MMOG massively multiplayer online game
MMORPG Massive Multiplayer Online Role Playing Game
MMR Modified Modified Read
MMS Microsoft Media Server
MMS Multimedia Messaging Service
MMU Memory Management Unit
MMXmultimedia extensions
MMX multimedia extensions
MNP Microcom Networking Protocol
MNS managed network services
MNS Master of Network Science
MO Magneto-Optical
MOB movable object
MoBo motherboard
MoCA Multimedia over Coax Alliance
MODEM modulator-demodulator
MOE Measures of Effectiveness
MOF Microsoft Operations Framework
MOH Music On Hold
MOM Microsoft Operations Manager
MOO Mud, Object Oriented
Moodle Modular Object-Oriented Dynamic Learning Environment
MoReq Model Requirements for the Management of Electronic Records
MORPH (from) metamorphosis
MOS Mean Opinion Score
MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
MOSS Microsoft Office SharePoint Server
MoST mobile solutions terminal
MOTD message of theday
MOTISMessage oriented text interchange system
MOV Merchant of Venice
MP3Moving Picture Experts Group Layer 3 Audio
MP3 MPEG Layer 3
MPAS mostly private address space
MPEGMoving Picture Experts Group
MPEG Moving Picture Experts Group
MPI Master Patient Index
MPIF Multi-Processor Interconnect Facility
MPL Mozilla Public License
MPL Multi-schedule Private Line
MPLS Multiprotocol Label Switching
MPN Microsoft Partner Network
MPOE minimum point of entry
MPP massively parallel processing
MPPE Microsoft Point to Point Encryption
Mpps millions of packets per second
MPS managed print services
MQ message queue (formerly)
MQT materialized query table
MRAM magnetoresistive random access memory
MRI Magnetic Resonance Imaging
MRO maintenance, repair and operations
mrouter multicast / router
MRTG Multi Router Traffic Grapher
MRU most recently used
MSMessage Store
MS Memory Stick
MS Microsoft
ms millisecond
MSA metropolitan statistical area
MSA Mobile Sales Assistant
MSA Modular Smart Array
MSAP Microsoft Application Platform
MSB Most Significant Bit
MSBD Media Stream Broadcast Distribution
MSC Mobile Switching Center
MSCONFIGMicrosoft configuration
MSCS Microsoft Cluster Server
MSDB main storage database
MSDE Microsoft Data Engine
MSDN Microsoft Developer Network
MSDP Multicast Source Directory Protocol
MSDSmaterial safety data sheet
MSE Microsoft Security Essentials
MSEE Microsoft Equation Editor
MSI Medium Scale Integration
MSI Message Signal Interrupts
MSI Micro Star International
MSI MicroSoft Installer
MSIL Microsoft Intermediate Language
MSL Mean Sea Level
MSM Mainframe Service Management
MSMQ Microsoft Message Queuing
MSN Microsoft Network
MSNP Microsoft Notification Protocol
MSO multiple-system operator
MSPP MultiService Provisioning Platform
MSS Maximum Segment Size
MSS mobile satellite service
MSS / MSSP managed security service (provider)
MSSPmanaged security service provider
MSTPMultiple Spanning Tree Protocol
MTAMessage transfer agent
MTA Mail Transfer Agent
MTA message transfer agent
MTA Multi-Threaded Apartment
MTBF / MTTF mean time between failures / mean time to failure
MTP message transfer part
MT-RJ Mechanical Transfer Registered Jack
MTS Microsoft Transaction Server
MTSO Mobile Telephone Switching Office
MTTR mean time to repair
MTUMaximum Transmission Unit
MTU maximum transfer unit
MTU Maximum Transmission Unit
MUA Mail User Agent
MUD Multi-User Dungeon or Dimension
MUImultilingual user interface
multimedia multiple forms of media
MULTOS Multi-Application Operating System
MUSE Multi-User Simulated Environment
mutex mutual exclusion
MUX Multiplexor
MVNO mobile virtual network operator
MVS Multiple Virtual Storage
MW middleware
MWE multiword expression
MWI Mobile Web Initiative
MX record mail exchange record
MXF Material Exchange Format
NAB Not A Bug
NAC Network access control
NAC network attached connection
NACHA National Automated Clearing House Association
NADNNearest Active Downstream Neighbor
NAI Network Associates Inc.
NAK Negative acknowledgement or not acknowledged
NAM Number Assignment Module
NAMPS Narrowband Advanced Mobile Phone Service
NaN Not a Number
NANAE News.Admin.Net-Abuse.Email
NANOG North American Network Operators Grou
NANP Identifies the electrical conditions on the circuit.
NAP Network Access Protection
NAP / NAPs network access points
NASnetwork-attached storage, network access server
NAS network access server
NAS Network Application Support
NAS network-attached storage
NASDAQ National Association of Securities Dealers Automated Quotations
NASS Network Attachment Subsystem
NASTRAN NASA Stress Analysis
NATnetwork address translation
NAT Network Address Translation
NAUNetwork Addressable Units
NAUNNearest Active Upstream Neighbor
NAV Norton Anti Virus
NAVSTAR NAVigation Satellite Timing and Ranging
NBC National Broadcasting Company
NBFNetBIOS Frame Protocol
NBMA Non-Broadcast Multiple Access (e.g. Frame Relay ATM)
NBNSNetBIOS Name Server
NBPName binding protocol
NBSP Non-Breaking Space
NC Network Computer
NCC Norton Control Center
NCCM Network Configuration and Change Management
NCI Network Channel Interface
NCPNetWare Core Protocol
NCPNetwork Control Program
NCp Netware Core Protocol
NCP Network Control Program
NCQ Native Command Queuing
NDC networked data center
NDISNetwork Driver Interface Specification
NDIS Network Driver Interface Specification
NDM Network Data Mover
NDMP Network Data Management Protocol
NDP Neighbor Discovery Protocol
NDr Non-Delivery Receipt
NDS Netware Directory Services
NEC National Electric Code
NEl Network Element Layer
NEMs network equipment manufacturers
NES Nintendo Entertainment System
NetApp Network Appliance
NetBEUInetworked basic input/output system extended user interface
netbeui NetBios Enhanced User Interface
NetBIOSnetworked basic input/output system
NETBIOS network basic input/output system
Netizen citizen of theInternet
net-J Internet disc jockey
newbie New beginner
NEWS Network Extensible Window System
NEXT Near-End Crosstalk
NF / NFs Normal Forms
NFC Near-field communication
NFF No Fault Found.
NFF Notes Flat File
NFI Near Field Imaging
NFSNetwork File System
NFS Network File System
NGC Next Generation Communications
NGN Next-Generation Network
NGOSS next-generation operational support system solutions
NHM Next Human Network
NHRP Next Hop Resolution Protocol
NICnetwork interface card
NIC Network Information Center
NIC Network Interface Card
nicad nickel-cadmium
NICAM Near Instantaneous Companded Audio Multiplex
NiCdnickel cadmium
NICE Narrative, Immersive, Collaborative Environment
NID Network Interface Device
NIH not invented here (syndrome)
NILO Network Interface LOader
NIM Network Interface Module
NiMHnickel metal hydride
NiMH Nickel Metal Hydride
NIP Non-Impact Printer
NIR Near-Infrared
NIS Network Information Service
NIS Norton Internet Security
NIST National Institute of Standards and Technology
NJE network job entry
NLA Network Location Awareness
NLB Network Load Balancing
NLDF national language dependent function
NLInot logged in or natural language interface
NLM NetWare Loadable Module
NLM Network Lifecycle Management
NLO net-liberated organization
NLOS Near Line OF Sight
NLP Natural language processing
NLQ Near Letter Quality
NLS National Language Support
NLSP Novell Link State Protocol
NLSR Natural languagespeech recognition
NLXnew low-profile extended
NMC Network Management Center
NMI nonmaskable interrupt
NMOS Negative-channel Metal Oxide Semiconductor
NMS Network Management Station
NMS Network Monitoring System
NNI network-to-network interface
NNTPnetwork news transfer protocol
NNTP Network News Transfer Protocol
NO/NC Normally Open/Normally Closed
NOC Network Operations Center
no-op no operation
NOSNetwork Operating System
NOS Network Operating System
NPA numbering plan area
NPC North Pacific Cable
NPDA Network Problem Determination Application
NPI National Provider Identifier
NPL Netscape Public License
NPP Network Payment Protocol
NPSI nonpartitioned secondary index
NPU Network Processor
NRM normal response mode
NRO Number Resource Organization
NRZ Non Return to Zero
NRZ Non-return-to-zero
NRZI Non-return to zero inverted
ns Nanosecond
NSA Network Security Appliance
NSFNET National Science Foundation Network
NSI Network Solutions, Inc
NSLookup Name Server Lookup
NSLU2 Network Storage Link for USB 2.0
NSM Network and Security Manager
NSP Network Service Provider
NSR nonshared resources
NSR Non-Source Routed
NSS Network Switching Subsystem
NT New Technology
NTCIP National Transportation Communications for Intelligent Transportation System
NTE Network Termination Equipment
NTF No Trouble Found
NTFSnew technology file system
NTFS New Technology File System
NTLDRnew technology loader
NTO Network Terminal Option
NTP network time protocol
NTRU Number Theory is Really Useful
NTSC National Television System Committee
NTT network topology template
NTT Nippon Telegraph and Telephone
NUI Natural User Interfaces
NUMA Non-Uniform Memory Access
NVE Network Visible Entity
NVRAM Non-volatile RAM
NWLINKNetware Link
NZ-DSF Non Zero-Dispersion-Shifted Fiber
O.K.I. Open Knowledge Initiative
O2 Object-Oriented
O2O Online To Offline
OAAM Oracle Adaptive Access Manager
OADM Optical Add/Drop Multiplexer
OAM object access method
OAM / OA&M / OAM&P Operations, Administation, and Management (and
OASIS Organization for the Advancement of Structured Information Standards
OAT Outside Air Temperature
OATH Object-oriented Abstract Type Hierarchy
OBDR One Button Disaster Recovery
OBEX OBject EXchange
OBI Open Buying on the Internet
OBIEE Oracle BI Enterprise Edition
OBM On-board modem
OBOE Off-By-One Error
OBU On Board Unit
OCOptical Carrier
OC overclock
OC-12 Optical Carrier Level N
OC-192 Optical Carrier Level N
OC-3 Optical Carrier Level N
OC-48 Optical Carrier Level N
OC-768 Optical Carrier Level N
OCIA Optically Coupled Interface Adapter
OCL Object Constraint Language
OC-N Optical Carrier Level N
OCP Open-Closed Principle
OCP Oracle Certified Professional
OCRoptical character recognition
OCR Optical Character Recognition
OCSP Online Certificate Status Protoco
OCTAVE Operationally Critical Threat, Asset, and Vulnerability Evaluation
OCX OLEÂ Custom Controls
ODA Open Document Architecture
ODBCOpen Database Connectivity
ODBC Open Database Connectivity
ODC Offshore development center
ODD optical disk drive
ODF OpenDocument
ODIOpen Data link Interface
ODI Open Data-link Interface
ODM Original Design Manufacturer
ODMR On-Demand Mail Relay
ODOE on demand operating environment
ODP Open Data Path
ODPS On Demand Packaging Service
OEMoriginal equipment manufacturer
OEM Oracle Enterprise Manager
OEM Original Equipment Manufacturer
OEP Outlook Exchange Protocol
OFB output feedback
OFCom Office of Communications
OFDM / OFDMA Orthogonal Frequency-Division multiplexing (/Multiple Access)
OFM Oracle Fusion Middleware
OFX Open Financial Exchange
OGL Open Graphics Language
OGSA Open Grid Services Architecture
OHG Operators Harmonization Group
OIC Oracle Incentive Compensation
OID Object Identifier
OLAP online analytical processing
OLE Object Linking and Embedding
OLED organic light-emitting diode
OLIC online image copy
OLIVE On-Line Interactive Virtual Environment
OLPC One Laptop Per Child
OLTP On-Line Transaction Processing
OMA Open Mashup Alliance
OMG Object Management Group
OMH order management hub
OML Ontology Markup Language
OMRoptical mark recognition
OMR Optical Mark Reader
OMSA OpenManage Server Administrator
OMT Object Modeling Technique
ONA Organizational network analysis
ONE Open Net Environment
OO object-oriented or object orientation
OOA&D Object-oriented analysis and design
OOB Out Of Band
OODB Object-Oriented Data Base
OOF Out Of Frame
OOo OpenOffice.org
OOP object-oriented programming
OOSE Object Oriented Software Engineering
OPA Open Patent Alliance
OPA Oracle Policy Automation
Opamp Operational Amplifier
op-code Operation Code
OpenCL Open Computing Language
OpenGL Open Graphics Library
OPML Outline Processor Markup Language
OPN Oracle Partner Network
OPOD Oracle Procurement On Demand
OPS Off Premise Station
OPX Off Premise Extension
ORB Object Request Broker
ORBS Open Relay Behaviour-modification System
ORDB Open Relay DataBase
ORF Open reading frame
ORFS Output Radio Frequency Spectrum
ORM Object/Relational Mapping
ORM operational risk management
OSoperating system
OS Operating System
OSA Open System Architecture
OSAF Open Source Applications Foundation
OSD On Screen Display
OSD Open Software Description
OSDL Open Source Development Lab
OSF Open Software Foundation
OSGi Open Services Gateway Initiative
OSIOpen Systems Interconnect
OSI Open System Interconnect (joint ISO and ITU standard)
OSI Open Systems Interconnection
OSLC Open Services for Lifecycle Collaboration
OSMINE Operations Systems Modification of Intelligent Network Elements
OSN output sequence number
OSPFOpen Shortest Path First
OSPF Open Shortest Path First
OSPF Open Shortest Path First (routing protocol)
OSPM Operating System Power Management
OSRoriginal equipment manufacturer service release
OSS Online Service System
OSS Open source software
OSSIM Open Source Security Information Management
OST Outside Surface Temperature
OTA Over The Air
OTDR Optical Time Domain Reflectometer
OTFE On-the-fly encryption
OTM Oracle Transportation Management
OTN Optical Transport Network
OTP One Time Password
OTP one-time programmable
OTP Open Trading Protocol
OTS Over-the-Shoulder
OU organizational unit
OUI Organization Unique Identifier
OUI Organizationally Unique Identifier
OVF Open Virtualization Format
OVP online video platform
OWA Outlook Web Access
OWASP Open Web Application Security Project
OWI Optimized Warehouse Initiative
OWL Web Ontology Language
OXE OmniPCX Enterprise
p2mp point-to-multipoint
P2P Peer to Peer
P2SC Power 2 Super Chip
P3P Platform for Privacy Preferences
P4M Pentium 4 Processor-M
PaaS platform-as-a-service
PABX / PBX private automatic branch exchange
PAC Proxy Auto-Configuration
PACE pressures, action, capabilities and enablers
PAD Packet Assembler and Disassembler
PAE Physical Addressing Extension
PAL Phase Alternate Line
PAL Processor Abstraction Layer
PAL Publication Access List
PAM Performance Acceleration Module
PAM pluggable authentication module
PAM Port to Application Mapping
PAM pulse amplitude modulation
PANpersonal area network
PAN Personal Area Network
PAPPassword Authentication Protocol
PAPPrinter access protocol
PAP Password authentication protocol
PAP Printer Access Protocol
PA-QSA Payment Application Qualified Security Assessor
PARC Palo Alto Research Center
PaRM Patient relationship management
PASC Portable Applications Standards Committee
PASV Passive (command)
PAT Performance Acceleration Technology
PAT Port address translation
PATAparallel advanced technology attachment
PAVCL Panda Antivirus Command-Line Scanner
PB PetaByte
PBM pharmacy benefits management
PBN policy-based networking
PBX private branch exchange
PCpersonal computer
PC Personal Computer
PC Personal computer (host)
PCB Printed Circuit Board
PCCW (formerly) Pacific Century CyberWorks
PCD Photo Compact Disc
PCIperipheral component interconnect
PCI Peripheral Component Interconnect
PCI DSS Payment Card Industry Data Security Standard
PCIeperipheral component interconnect express
PCI-E Peripheral Component Interconnect - Express
PCIXperipheral component interconnect extended
PCLprinter control language
PCL Printer Command Language
PCM Pulse Code Modulation
PCM Pulse-code modulation
PCMCIAPersonal Computer Memory Card International Association
PCMCIA Personal Computer Memory Card International Association
PCR Peak Cell Rate
PCRE Perl-compatible regular expressions
PCS Personal Communications Service
PCT Private Communication Technology
PDApersonal digital assistant
PDA Personal Digital Assistant
PDB Program DataBase
PDCPrimary Domain Controller
PDC Personal digital cellular
PDC Primary Domain Controller
PDE possible duplicate emission
PDF Portable Document Format
PDH Plesiochronous Digital Hierarchy
PDLPage description language
PDL Pure Dumb Luck
PDM Pure Digital Monitor
PDNPublic data network
PDN Primary Directory Number
PDN public data network
PDP Policy Decision Point
PDQ Product Data Quality
PDS partitioned data set
PDU Protocol Data Unit
PDU Protocol data unit (such as segment, packet, frame, etc.)
PEAP Protected Extensible Authentication Protocol
PEARL Process and Experiment Automation Realtime Language
PEF Preferred Executable Format
PEM Privacy Enhanced Mail
PEP Policy Enforcement Point
PEP program entry procedure
Perl Practical Extraction and Report Language
PERT Program Evaluation and Review Technique
PET Personal Electronic Transactor
PF Key Program Function Key
PFM personal financial management
PFS Public-Key Forward Secrecy
PGApin grid array
PGA2pin grid array 2
PGI Premiere Global Services, Inc.
PGP Pretty Good Privacy
PGR presentation graphics routines
pgSQL PostgreSQL
PHB Per-Hop-Behavior
PHI Protected Health Information
PHP PHP Hypertext Preprocessor(originally Personal Home Page)
PHS Personal Handy Phone System
PHY Physical Layer
PHZIP Phil Katz’s ZIP
PiB pebibyte
PIC Position-Independent Code
Picnic Problem In Chair, Not In Computer
PID Process ID
PID Proportional Integral Derivative
PIE Presence, Identity and Edge
PII personally identifiable information
PIM Personal information manager
PIM Privileged Identity Management
PIM Protocol Independent Multicast
PINpersonal identification number
PIN personal identification number
PINE Program for Internet News and E-Mail
ping Packet Internet or Inter-Network Groper
PIO Programmed Input/Output
PIPE Private Internet Protocol Encapsulation
PIPs process integration packs
PIX Private Internet eXchange
pixel / pel Picture Element
PKCS Public-Key Cryptography Standards
PKIpublic key infrastructure
PKI public-key infrastructure
PL/1 Programming Language 1
PL/SQL Procedural Language/Structured Query Language
PLA Programmable Logic Array
PLC PowerLine Communication
PLC product life cycle
PLCP Physical Layer Convergence Protocol
PLD Programmable Logic Device
PLL Phase Lock Loop
PLM product life cycle management
PLMN public land mobile network
PLOGI port login
PLPA pageable link pack area
PMD Physical Media Dependent
PMDB performance management database
PME Power Management Event
PMI Portable Management Interface
PMI Privilege Management Infrastructure
PMI Product and manufacturing information
PMI Project Management Institute
PMM Post Memory Manager
PMML Predictive Model Markup Language
PMO Project management office
PMR Perpendicular Magnetic Recording
PMR Private Mobile Radio
PMSM permanent magnet synchronous motors
pNFS parallel Network File System
PNG Portable Network Graphics
PnPplug and play
PNP Personal Network Platform
PnP Plug and Play
PNRP Peer Name Resolution Protocol
POC Proof of Concept
POC Push-to-talk Over Cellular
POD Proof of Deposit
POD Publishing on demand
PoE Power Over Ethernet
pog.com Play Online Games
POLP principle of least privilege
PON passive optical networking
POPpost office protocol
POP Point of presence
POP Post Office Protocol
POP protected object policy
POP3post office protocol 3
POP3 Post Office Protocol v3
POP3 Post Office Protocol, version 3
POS point of sale
POSIX Portable Operating System Interface for UNIX
POSTpower-on self test
POST Power-on self test
POTSplain old telephone service
POTS Plain old telephone service
POWER Performance Optimization With Enhanced Risc
POX plain old XML
PPC Pay-Per-Click
PPD Postscript Printer Description
PPE PowerPC Processor Element
PPM Parts Per Million
PPM project portfolio management
PPN Primary Port Network
PPPpoint-to-point protocol
PPP Point to Point Protocol
PPP Point-to-point Protocol
PPP Public–private partnership
PPPoE Point-to-Point Protocol over Ethernet
PPRC Peer to Peer Remote Copy
PPTPpoint-to-point tunneling protocol
PPTP Point-to-Point Tunneling Protocol
PPU PowerPC Processor Unit
PQA Palm Query Application
PRADO PHP Rapid Application Development Object-oriented
PRC Primary Reference Clock
PRIprimary rate interface
PRI Primary Rate Interface
PRINCE Projects in Controlled Environments
PROMprogrammable read-only memory
PROM Programmable ROM
PRPQ programming request for price quotation
PS Photoshop
ps Picosecond
PS PlayStation
PS PostScript
PS/2Personal System/2 connector
PS/2 personal system/2
PSA professional service automation
PSD PhotoShop Drawing
PSIP Program and Systems Information Protocol
PSK phase shift keying
PSLC Parallel Sysplex License Charge
PSN Packet Switch Node
PSN Playstation Network
PSN Processor Serial Number
PSP Personal Software Process
PSP PlayStation Portable
PSPs print service providers
PSS Print SubSystem
PSTNpublic switched telephone network
PSTN public switched telephone network
PTF Print To Fax
PTR record Pointer record
PTT Postal, Telephone, and Telegraph
PTT Public Telephone and Telegraph
PTT Push To Talk
PTTs Post, telegraph, and telephone authorities
PTZ pan-tilt-zoom
PUPhysical Units
PUMA Privileged user monitoring and auditing
PUMA Protected User Mode Audio
PUP Potentially unwanted program
PUT program update tape
PVCpermanent virtual circuit
PVC permanent virtual circuit
PVC Polyvinyl Chloride
PVR personal video recorder
PVST Per-VLAN Spanning Tree
PVV PIN verification value
PWM Pulse width modulation
PWS Personal Web Server (or Peer Web Services )
P-x Pentium - (numbers)
PXEpreboot execution environment
PXE Preboot eXecution Environment
QA Quality Assurance
QAM quadrature amplitude modulation
QAT Quantity Above Threshold Indicator
QB Quickbooks
QBDG Query Based Distribution Group
QBDL Query Based Distribution List
QBL Query By Example
QCIF Quarter Common Intermediate Format
QD Queuing Delay
QDF Quicken Data File
QDOS Quick And Dirty Operating System
QDR Quad Data Rate
QEMM Quarterdeck Expanded Memory Manager
QFE Quick Fix Engineering
QFP Quoted For Permanence
QI Query Interface
qic Quarter-Inch Cartridge
QIF Quicken Interchange Format
QIP quality improvement process
QIX NASDAQ Information Exchange protocol
QLLC Qualified Logical Link Control protocol
QMF Query Management Facility
QMS Quality Micro Systems
QName qualified name
QoE quality of experience
QoSquality of service
QoS quality of service
QP Quantum Programming
QPM QoS Policy Manager
QPS Queries-per-second
QPSK Quadrature Phase-Shift Keying
QR code Quick Response code
QSA Qualified Security Assessor
QSIG Q signaling
QT QuickTime
QTM Quadratic Texture Mapping
QTSS QuickTime Streaming Server
QTVR QuickTime Virtual Reality
QTW QuickTime for Windows
Quagi quad and Yagi
QVGA Quarter Video Graphics Array
QXGA Quad ((or Quantum) eXtended Graphics Array
R&D research and development
R_A_TOV resource allocation timeout value
RAB Raid Advisory Board
RAB Reverse-Link Activity Bit
RAC Real Application Cluster
RACF Resource Access Control Facility
RACH Random Access Channel
racon radar beacon
RAD radiation absorbed dose
RAD Rapid Application Development
RADA random access discrete address
RADCAB Relevancy Appropriateness Detail Currency Authority Bias
RADIUSRemote Authentication Dial In User Service
RADIUS Remote Authentication Dial-In User Service
RADVD router advertisement daemon
RAI remote alarm indication
RAIDredundant array of independent (or inexpensive) discs
RAID Redundant Array of Independent Disks
RAMrandom access memory
RAM Random Access Memory
RAMDAC Random Access Memory Digital to Analog Converter
RAN Radio Access Network
RAPI Rsvp Application Programming Interface
RARE Européenne
RARE Reseaux Associés pour la RechercheÂ
RARPReverse Address Resolution Protocol
RARP Reverse Address Resolution Protocol
RARP Reverse ARP
RASremote access service
RAS Registration, Admission, Status
RAS Remote Announcing System
RAS remote-access server (services)
RAS Row Address Select
RAS Row Address Strobe
RAT Remote Administration Tool
RBA Run Book Automation
RBACrole-based access control or rule-based access control
RBAC role-based access control
RBL Real-time Black-hole List or Real-time Block List
RBOC Regional Bell Operating Company
RC Release Candidate
RC2/4/5 Rivest Cipher 2/4/5
RCA Radio Corporation of America (cables)
RCC radio common carrier
RCM Revision and Configuration Management
rcp Remote copy
RCP Rich Client Platform
RCS Revision Control System
RCU Rapid Cloning Utility
RDAC Redundant Disk Array Controller
RDBA Remote Database Access
RDBMS relational database management system
RDDL Resource Directory Description Language
RDF radio direction-finding
RDF Resource Description Framework
RDI remote defect indication
RDL Report Definition Language
RDM Remote Deployment Manager
rDNS Reverse DNS
RDP Remote Desktop Protocol
RDP Router Discovery Protocol
RDR Rate of Defect Recurrence
RDRAMRAMBUS dynamic random access memory
RDT remote digital terminal
RED Random Early Detection
RED Reputation Enabled Defense
REG Range Extender with Gain
ReGS Reporting Grid Services
REJ Reject. In communications
Rel Recorder element
REL Rights Expression Language
RELAX REgular LAnguage description for Xml
REN Ringer Equivalency Number
RePDV Reputation Digital Vaccine
Res resolution
RES Robots Exclusion Standard
REST REpresentational State Transfer
RETAIN Remote Technical Assistance and Information Network
REVS Rapid Exchange of Virus Samples list.
REXX Restructured EXtended eXecutor
RFradio frequency
RF Radio frequency
RFB Remote Framebuffer
RFC radio-frequency choke
RFC Request for Comments
RFCOMM Radio Frequency Communication
RFIradio frequency interference
RFI remote failure indication
RFID radio frequency identification
RFMD RF Micro Devices
RFP Request For Proposal
RFS / RFU Ready For Service / Use
RFT Request For Technology
RFT revisable-form text
RGBred green blue
RGB Red/Green/Blue
RGMP Router-port Group Management Protocol
RHCE Red Hat Certified Engineer
RHCS Red Hat Cluster Suite
RHEL Red Hat Enterprise Linux
RHR radio horizon range
RHSBL Right-Hand Side Blacklist
RIA Rich Internet Application
RIM Reference Information Model
RIM Research In Motion
RIMMRAMBUS inline memory module
RIMM Rambus In-Line Memory Module
RIProuting information protocol
RIP raster image processor
RIP Routing Information Protocol
RIPE Réseaux IP Européens
RIR regional Internet registry
RISremote installation service
RISCreduced instruction set computer
RISC Reduced Instruction Set Computer
RJregistered jack
RJ-11registered jack function 11
RJ11 Registered Jack 11
RJ-45registered jack function 45
RJ45 Registered Jack 45
RJE Remote Job Entry
RLC Radio Link Control
RLE run-length encoding
RLL Run Length Limited
RLL Run-Length Limited
rlogin remote login
RLP Radio Link Protocol
RMAreturned materials authorization
RMA rate monotonic analysis
RMA Return Materials Authorization
RMC Raptor Management Console
RMC Resource Monitoring and Control
RME Rack Mount Equipment
RME resource model engine
RMI Remote Method Invocation
RMON Remote Monitoring
RMS Record Management System
RMS Right Management Service
RMS Root Mean Square
RMU Rack Mount Unit
RNA Ribonucleic acids
RNA Ring No Answer
RNC Radio Network Controller
R-NE remote-network element
RNI Raw Native Interface
RNR receive not ready
ROA recognized operating agency
ROADM reconfigurable optical add-drop multiplexer
ROD record oriented data
RODM Resource Object Data Manager
RoHS Restriction of Hazardous Substances
ROI Return on Investment
ROKSO Register of Known Spam Operations
ROLR receive objective loudness rating
ROMread only memory
ROM Read-Only Memory
ROM Report Object Model
ROOM Real-Time Object-Oriented Modeling
ROP Raster Operation
ROR remote outdoor router
RoR Ruby on Rails
ROS run of site
ROSE Remote Operations Service Element
rot13 rotate 13
RPA Recursive Pyramid Algorithm
RPCRemote Procedure Call
RPC Remote Procedure Call
RPF Reverse Path Forwarding
RPG Report Program Generator
RPG role-playing game
RPI Rockwell Protocol Interface
RPL Recognized Prior Learning
RPL Remote Program Load
RPL Requested Privilege Level
RPM Rapid Predictive Modeler
RPM Red Hat Package Manager
RPM Revolutions Per Minute
RPM Route Processor Module
RPN Reverse Polish Notation
RPO recovery point objective
RPP receiving party pays
RPR Resilient packet ring
RP-SMA Reverse Polarity SubMiniature version A
RPT radio personal terminal
RP-TNC Reverse Polarity Threaded Neill-Concelman
RQN Real-Quick Newsletter
RRResource Records
RR Register to Register
RR repeatable read
RR / RRS round-robin scheduling
RR_TOV resource recovery timeout value
RRI Reverse Rate Indicator
RRPP Rapid Ring Protection Protocol
RS Recommended Standard
RS Reed-Solomon
RS Remote Scripting
RS RuneScape
RS-232 or RS-232Crecommended standard 232
RSA register save area
RSA Remote Supervisor Adapter
RSA Rivest, Shamir and Adleman
RSA rural service area
RSBAC Rule Set Based Access Control
RSCT Reliable Scalable Cluster Technology
rsh Remote Shell Protocol
RSIP Realm Specific Internet Protocol
RSL received signal level
RSM Relational Storage Manager
RSM Remote Storage Management
RSM Route Switch Module
RS-MMC Reduced Size Multi-Media Card
RSN Real Soon Now
RSPAN Remote Switched Port Analyzer
RSS RDF Site Summary / Really Simple Syndication
RSS Receive Side Scaling
RSS Relay Spam Stopper
RSSI Relative Signal Strength Indicator
RSTP Rapid Spanning Tree Protocol
RSU Recommended Service Upgrade
RSU remote switching unit
RSVP Resource Reservation Protocol
RTCreal-time clock
RTC Rich Thin Client
RTD Real-Time Decisions
RTE real-time enterprise
RTE round-trip engineering
RTF Rich Text Format
RTG Radioisotope Thermoelectric Generators
RTG Receive/transmit Transition Gap
RTGS Radioisotope Thermoelectric Generators
RTK Real Time Kinematic
RTM Read The Manual
RTMPRouting table maintenance protocol
RTMP routing table maintenance protocol
RTO recovery time objective
RTP Real-time Transport Protocol
rtPS Real-Time Polling Service
RTS request to send
RTSC Read the Source Code
RTSE Reliable Transfer Service Element
RTSP Real Time Streaming Protocol
RTT Radio Transmission Technology
RTT Real-Time Technology
RTT round-trip time
RTTY radio teletypewriter
RTU Remote Terminal Unit
RTU Right To Use
R-UIM removable user identity module
RUOW remote unit of work
RUP Rational Unified Process
RUS Recipient Update Service
RVI Reverse Interrupt
RVLC Reversible Variable Length Code
RW Read Write
RWI radio and wire integration
RWM Read-Write Memory
RWP Remote Write Protocol
RWU remote wake-up
RX / RXD Receive / Receiving Data
S/N Signal-to-Noise
S/PDIF Sony/Philips Digital Interface
S+ Security+
S3 Simple Storage System
SA Source-Active
SA System Administrator
SAA Systems Application Architecture
SaaS software as a service
SAD Security Association Database
SAIC Science Applications International Corporation
SALT Speech Application Language Tags
SAM security account manager
SAM Serial Access Memory
SAM software asset management
SAML Security Assertion Markup Language
SANstorage area network
SAN / SANs Storage Area Network(s)
SANS SysAdmin, Audit, Network, Security
SANS System Administration, Networking and Security institute
SAPService Advertising Protocol
SAP Secondary Audio Program
SAP Service Access Point
SAP Service Advertising Protocol
SAP Systeme, Anwendungen, Produkte
SAR segmentation and reassembly
SASSingle Attachment stations
SAS Secure Attention Sequence
SAS Serial Attached SCSI
SAS single attachment station
SAS Statistical Analysis System
SAS 70 Statement on Auditing Standards No. 70
SASL Simple Authentication and Security Layer
SAST Static application security testing
Sat Nav Satellite navigation
SATAserial advanced technology attachment
SAV Symantec AntiVirus
SAX Simple API for XML
SB Sound Blaster
SBAS Satellite-Based Augmentation System
SBB Storage Bridge Bay
SBC Session Border Controller
SBC single-board computer
SBCS single-byte character set
SBCS Smart Business Communications System
SBL Spamhaus Block List
SBLOG spam blog
SBM Subnet Bandwidth Manager
SBS Small Business Server
SBSD Slow But Sure Death
SCsubscription channel
SCA Service component architecture
SCADA Supervisory Control And Data Acquisition
SCAI Switch-to-Computer Applications Interface
SCAM SCSI Configured Auto-Magically
SCCM Software change and configuration management
SCCP Signaling Connection and Control Part
SCCS Source Code Control System
SCM Service Control Manager
SCM Source Code Management
SCM Source configuration management
SCM Specifc Coverage Metric
SCM supply chain management
SCO Santa Cruz Operation
SCOM System Center Operation Manager
SCORM Sharable Courseware Object Reference Model
SCP Secure Copy
SCP Service/Signal Control Point
SCPC single channel per carrier
SCR Sustainable Cell Rate
SCSIsmall computer system interface
SCSI Small Computer System Interface
SCSI IDsmall computer system interface identifier
SCSL Sun Community Source Licensing
ScTP screened twisted pair
SCTP Stream Control Transmission Protocol
SCWCD Sun Certified Web Component Developer
SDcard secure digital card
SD Sales and Distribution
SD Secure Digital
SD Span Destination
SDDL Security Descriptor Definition Language
SDDM source distributed data manager
SDDS Sony Dynamic Digital Sound
SDEP sequential dependent segment
SDFI Secure Digital Forensic Imaging
SDHSynchronous Digital Hierarchy
SDH Synchronous Data Hierarchy
SDH Synchronous Digital Hierarchy
SDK software development kit
SDLC Software development life cycle
SDLC Synchronous Data Link Control
SDLSSynchronous Data Link Control
SDLT Super Digital Linear Tape
SDMA spatial division multiple access
SDN Secondary Directory Number
SDN Software Defined Network
SDO Service Data Objects
SDP Service Delivery Platform
SDP Session Description Protocol
SDR software-defined radio
SDRAMsynchronous dynamic random access memory
SDRAM Synchronous Dynamic Random Access Memory
SDS Sudden Death Syndrome
SDSL Symmetric Digital Subscriber Line
SDTV Standard Definition television
SDVO Serial Digital Video Output
SDX Storage Data Acceleration
SE secure element
SEAL simple and efficient AAL
SEA-ME-WE Southeast Asia-Middle East-Western Europe 2
SEA-ME-WE 3 Southeast Asia-Middle East-Western Europe 3
SEAS SaaS-enabled application server
SECsingle edge connector
SEC Siemens Enterprise Communications
SECAM Sequential Couleur a Memoire
SEG secure e-mail gateway
SEM Strategic Enterprise Management
SEN Siemens Enterprise Communications
SEO Search Engine Optimization
SERK Server Extensions Resource Kit
SERP Search Engine Results Page
SES SecureEasySetup
SES Severely Errored Seconds
SET Secure Electronic Transaction
SETI Search of Extraterrestrial Intelligence
SEX Sun Users’ Group & elsewhere
SFA Sales Force Automation
SFCsystem file checker
SFD Start-of-Frame Delimiter
SFD Start-of-frame delimiter (Ethernet, HDLC, etc.)
SFF Small Form Factor
SFP Small form-factor pluggable
SFTP SSH File Transfer Protocol (or program)
SFU Services For Unix
SGC Server Gated Cryptology
SGF Structured Graphics Format
SGI Silicon Graphics Incorporated
SGMLStandardized General Markup Language
SGML Standard Generalized Markup Language
SGRAMsynchronous graphics random access memory
SGRAM Synchronous Graphics Random Access memory
SGSN Service GPRS Support Node
SHA Secure Hash Algorithm
S-HTTP Secure HTTP (rarely used)
S-HTTP Secure Hypertext Transport Protocol
SI system integration
SI system integrator
SID Security Identifier
SIEM (SEM & SIM) Security Information and Event Management
Sig Block signature block
SIIA Software & Information Industry Association
SIIT Stateless Ip/Icmp Translation algorithm
SIL Safety Integrity Level
SIM Security Information Management
SIM subscriber identity module
SIMD Single Instruction Multiple Data
SIMMsingle inline memory module
SIMM single in-line memory module
Simulcast simultaneous broadcast
SIP Session Initiation Protocol
SIPP Stable Image Platform Program
SiS Silicon Integrated Systems
SIS Single Instance Store
SIS student information system
SISMAPI Siebel Internet Session Network API
SITA Societe Internationale de Telecommunications Aeronautiques
SIU smallest installable unit
SIX Shared with Intent eXclusive
SKMS Service Knowledge Management System
SKU Stock Keeping Unit
SL Scientific Linux
SLA Service Level Agreement
SLARP Serial Line ARP (Address Resolution Protocol)
SLEDSingle Large Inexpensive disk
SLIscalable link interface or system level integration or scanline interleave mode
SLI Scalable Link Interface
SLIC Subscriber Line Interface Card
SLIPSerial Line interface Protocol
SLIP Serial Line Internet Protocol
SLIP Serial Line Internet Protocol (obs.)
SLM service level management
SLP DA Service Location Protocol Directory Agent
SLR Scalable Linear Recording
SLS Softlanding Linux System
SLSI Super Large Scale of Integration
SM/SI Social Mining and Social Intelligence
SMART Self-Monitoring Analysis And Reporting Technology
SMASH Simple, Many And Self-Healing
SMATV satellite master antenna television
SMAUSmart Multi station Access Unit
SMBserver message block or small to midsize business
SMB Server Message Block
SMBP Server Message Block Protocol
SMD Storage Module Device
SMDR station message detail recording
SMDSSwitched Multimegabit Data Service
SMDS Switched Multimegabit Data Service
SMF Semantic Modelling Format
SMI Structure of Management Information
SMiShing SMS phishing
SMLT Split Multi-Link Trunking
SMP Simple Management Protocol
SMP Symetric MultiProcessing
SMSSystems Management Server
SMS Security Management System
SMS Short Message Service
SMS Systems Management Server
SMSC Short Messaging Service Center
SMSC Smart Mixed-Signal Connectivity
SMSI Simplified Message Service Interface
SMTPsimple mail transport protocol
SMTP Simple Mail Transfer Protocol
SN Sequence Number
SNASystem Network Architecture
SNA Social Network Analysis
SNA Systems Network Architecture
SNA Systems Network Architecture (IBM)
SNAP SubNet Access Protocol
SNAP Sub-Network Access Protocol
SNC Supply Network Collaboration
SNI Switch Node Interface
SNIPS System & Network Integrated Polling Software
SNMPsimple network management protocol
SNMP Simple Network Management Protocol
SNS social networkingsite
SOA Service Oriented Architecture
SOA Start of Authority
SOAP Simple Object Access Protocol
SOC Security Operation Centre
SOC Separation Of Concerns
SoDIMMsmall outline dual inline memory module
SODIMM Small Outline Dual Inline Memory Module
SOF Start of frame
SOH Start Of Header
SOHOsmall office/home office
SoIP Storage over IP
SOM Self-Organizing Map
SONETSynchronous Optical Network
SONET Synchronous Optical Network
SONIC SAC On-Line Interactive Controller
SONIC Science Of Networks In Communities
SORBS Spam and Open Relay Blocking System
SOS Secure Object Store
SOS Sophisticated Operating System
SOS Symbian Operating System
SOW statement of work
SOX Sarbanes-Oxley Act
SPservice pack
SP Service-Packs
SP storage processor
SP1service pack 1
SP2service pack 2
SPAN Switched Port Analyzer
SPARC Scalable Processor ARChitecture
SPB Stored Procedure Builder
SPC stored program control
SPD Serial Presence Detect
SPD System Products Division
SPDIFSony-Philips digital interface format
SPE Synergistic Processor Element
SPE System Policy Editor
SPF Sender Policy Framework
SPF Shortest Path First
SPGAstaggered pin grid array
Sphairon Sphere, luminary, global and Elektron, Technology (vision)
SPI Serial Peripheral Interface
SPI Stateful Packet Inspection
SPICE Simple Protocol for Independent Computing Environment
SPIM Spam over Instant Messaging
SPIT Spam over Internet Telephony
SPL Sender Policy Framework
SPL Sound Pressure Level
SPM Statistical Packet Multiplexing
SPM supplier performance management
SPML Service Provisioning Markup Language
SPOF Single point of failure
SPOI Signaling Point Of Interface
SPOT Smart Personal Objects Technology
SPREAD Systems Programming, Research, Engineering And Development
SPSS Statistical Package for the Social Sciences
SPU Synergistic Processor Unit
SPXsequenced package exchange
SPX Sequenced Packet Exchange
SQLStructured Query Language
SQL Structured Query Language
SQL PL SQL procedural language
SQR Security to Quality Defect Ratio
SR Speech Recognition
SRAMstatic random access memory
SRAM Static random access memory
SRAT Static Resource Affinity Table
SRGS Speech Recognition Grammar Specification
SR-IOV Single-root I/O virtualization standards
SRL Singing Return Loss
SRM storage resource management
SRS Shared Registry Server
SRT (formerly) Souris River Telecommunications
SRT Source Routing Transparent
SRV Service records
SS7 Signaling System 7
SSA Social Security Administration
SSA Survivable Systems Analysis
SSAP Source Service Access Point
SSB sequential store buffer
SSCPSystems Services Control
SSD Solid-State Drive
SSE Simple Sharing Extension
SSE Streaming Simd Extensions
SSHsecure shell
SSH Secure shell
SSI Server-Side Includes
SSI Small Scale Integration
SSIDservice set identifier
SSID Service Set identifier
SSID Service set identifier (Wi-Fi)
SSIM Symantec Security Information Manager
SSLsecure sockets layer
SSL Secure Sockets Layer
SSLE sequential systems of linear equations
SSMP Simple Screen Management Protocol
SSO single sign-on
SSO System Security Officer
SSSCE Short Self-Contained Correct (or Compilable) Example
STstraight tip
STA Single Threaded Apartment
STEP Standard for the exchange of product
STK Satellite ToolKit
STM scanning tunneling microscopes
STM Synchronous Transport Module
STPshielded twisted pair
STP shielded twisted pair
STP Soa Tools Platform
STP Spanning Tree Protocol
STP Straight Through Processing
STP Switching Transfer Points or Single Transfer Points
STS Security Token Service
STT Secure Transaction Technology
STUN Session Traversal Utilities for NAT
STX Start Of Text
SUA Single User Account
SUS Software Update Services
SUT System Under Test
SVBR Semantics of Business Vocabulary and Business Rules
SVCSwitched virtual circuit
SVC Scalable Video Coding
SVC supervisor call
SVC Switched Virtual Circuit
SVD Secondary Virtual Disk
SVG Scalable VectorGraphics
SVGAsuper video graphics array
SVGA Super Video Graphics Array
S-Video Super-Video /Â Sony Video
SVPCo Small Value Payments Co.
SW or S/W Software
SWAP Shared Wireless Access Protocol
SWAT Samba Web Administration Tool
SWAT Solutions with Advanced Technologies
SWIFT Society for Worldwide Interbank Financial Telecommunication
SWIM System Wide Information Management
SWL short wavelength
SWOP Specifications for Web Offset Publications
SWT Standard Widget Toolkit
SXGAsuper extended graphics array
SYN (TCP) Synchronization
Sync Synchronisation
syslog system logging
Sysop System Operator
SYSVOL System Volume
TACACS Terminal Access Controller Access Control System
TAE text analysis engine
TAO Track at Once
TAPI Telephony Application Programming Interface
tar Tape ARchive
TAXI Transparent Asynchronous Transmitter/Receiver Interface
Tb terabit
TB TeraByte
Tbps terabits per second
TBR Technology Business Research
TCA Transaction Cost Analysis
TCAP Transaction Capabilities Application Part
TCB trusted computing base
TCG Trusted Computing Group
tcl Tool Command Language
TCO total cost of ownership
t-commerce television commerce
TCPtransmission control protocol
TCP Test Coordination Procedure
TCP Transmission Control Protocol
TCP/IPtransmission control protocol/internet protocol
TCP/IP Transmission Control Protocol/Internet Protocol
TCP/IP Transmission Control/Internet Protocol
TCQ Tagged Command Queuing
TCS Tata Consultancy Services
TCS Telecommunications Systems
TCU transmission control unit
TDC A/S Tele-Denmark Communications
TDD/TTY Tone Dialing for the Deaf/Teletype
TDDM target distributed data manager
TDITransport Driver Interface
TDK Tokyo Denki Kagaku
TDL time differential linking
TDM time division multiplexing
TDM Time-division multiplexing
TDRtime domain reflectometer
TDR Time Domain Reflectometry
TD-SCDMA Time division-synchronous code division multiple access
TE Traffic Engineering
TEC Thermoelectric Cooler
TEC Tivoli Enterprise Console
TED Technology Entertainment and Design
TED Tiered Electronic Distribution
TED Torrent Episode Downloader
TED Tunnel Endpoint Discovery
TEHO tail end hop off
TEI Total Economic Impact
Telco telephone company
telematics telecommunications and informatics
telephony Telephone technology
Telnet telephone network protocol
TEM telephone expense management
TERM technology-enabled relationship management
TESS and Statistics Server
TESS Transaction EventsÂ
TETRA Terrestrial Trunked Radio
texel Texture Element
TFRC TCP-Friendly Rate Control
TFS Team Foundation Server
TFS Three Finger Salute
TFT Thin Film Transistor
TFTPtrivial file transfer protocol
TFTP Trivial File Transfer Protocol
TGT ticket-granting ticket
TI Texas Instruments
TIATelecommunications Industries Association
TIA Telecommunications Industry Alliance
TiB tebibyte
TIES time independent escape sequence
TIFF Tag Image File Format
TIP Telepresence Interoperability Protocol
TISPAN Telecoms & Internet Converged Services & Protocols for Advanced Networks
TKIP Temporal Key Integrity Protocol
TLB translation lookaside buffer
TLDTop Level domain
TLD Top Level Domain
TLI Transport Layer Interface
TLL Task Library Language
TLM Transportation Lifecycle Management
TLP Transactional Licensing Program
TLS Transport Layer Security
TMHES Trend Micro Hosted Email Security
TMP file temporary file
TMRS traffic measurement and recording systems
TMS Threat Management System
TMS transportation management system
TNC Trusted Network Connect
TNEF Transport Neutral Encapsulation Format
TNS Transaction Network Services
TOA time of arrival
TOD time-of-day
TOD Tool on Demand
TOE TCP/IP Offload Engine
TOFU Trust On First Use
ToS Type Of Service
TOSLink Toshiba Link
TPF Transaction Processing Facility
TPM Transactions Per Minute
TPM Trusted Platform Module
TP-MIC Twisted-Pair Media Interface Connector
TPMs transaction processing monitors
TPS Transaction Process System
TPS transactions per second
TPV Third Party Vendor
TR Terminal Ready
tracert traceroute
Transceiver Transmitter/Receiver
TRIP Telephony Routing over Internet Protocol
TRIP Token Ring Interface Processor
Triple DES / TDES Triple Data Encryption Standard
TRM Teradata Relationship Manager
TRS Tip, Ring, Sleeve (cable)
TRUE task-related user exit
TS Terminal Server / Services
TS-CAL Terminal Services - Client Access License
TSF Text Services Framework
TSIG Transaction Signature
TSM Tivoli Storage Manager
TSM trusted service manager
TSN The Sierra Network
TSO Time Sharing Option
TSOP Thin Small Outline Package
TSR Terminate and Stay Resident
TSRM Tivoli Service Request Manager
TSV Tab Separated Value (file)
TTL Time To Live
TTL Transistor Transistor Logic
TTP trusted third party
TTS Text-To-Speech
TTY TeleTypewriter
TUCOWS The Ultimate Collection of Winsock Software
TUP Telephone User Part
TUR trunk utilization report
TVO total value of opportunity
TVT ThinkVantage Technology
TWA transaction work area
TWAIN technology without an interesting name
TWX Teletypewriter Exchange Service
TX Transmit / Transmission
TXT Trusted eXecution Technology
TXT record Text record
U2F Undetectable and Untraceable Fraud
UAUsers agent
UA Upgrade Advantage
UAC User Account Control
UARTuniversal asynchronous receiver transmitter
UART universal asynchronous receiver-transmitter
UAT User Acceptance Test
uauth user authentication
UBE unsolicited bulk email
UBR Undefined Bit Rate
UC Unified communications
UC&C (or UCC) Unified Communications & Collaboration
UC2 Unified Communications and Collaboration
UCB unit control block
UCC Uniform Code Council
UCCW Ultimate custom widget
UCD Unicode Character Database
UCD Uplink Channel Descriptor
UCD User-centered design
UCE Unsolicited Commercial Email
UCM Unified Change Management
UCM Unified Computing System
UCM Universal Content Management
UCM Universal Customer Master
UCM Use Case Maps
UCP Ubuntu Certified Professional
UCS Universal Character Set
uDAPL User Direct Access Programming Library
UDDI Universal Description, Discovery and Integration
UDFuser defined functions or universal disk format or universal data format
UDF Universal Disk Format
UDLP UniDirectional Link Protocol
UDMAultra direct memory access
UDMA Ultra DMA (Ultra Direct Memory Access)
UDO Ultra Density Optical
UDPuser datagram protocol
UDP User Datagram Protocol
UDRP Uniform Dispute Resolution policy
UFS Unix File System
UGC User generated content
UGS Unsolicited Grant Service
UHF Ultra High Frequency
UHV Ultra High Voltage
UI user interface
UIA Unified Information Access
ULUnderwriter’s Laboratory
UL Underwriters Laboratories Inc.
ULH ultra-long-haul
ULV Ultra Low Voltage
UM Unified messaging
UMA Unified-Memory Architecture
UMA Unlicensed Mobile Access
UMA Upper Memory Area
UMA User Mode Audio
UMB Ultra Mobile Broadband
UMB upper memory block
UMC ultra modular computing
UMID Unique Material IDentifier
UML Unified Modeling Language
UMS Unfied Messaging Systems
UMTS Universal Mobile Telecommunication System
UNCuniversal naming convention
UNC Uniform / Universal Naming Convention
UNI User-to-Network Interface
Unicode UNIversal CODE
UNR Ubuntu Netbook Remix
UOL Universo Online
UOW unit of work
UPA user printable area
UPC Universal Product Code
UPnP Universal Plug and Play
UPSuninterruptible power supply
UPS Uninterruptible Power Supply
UPT Universal Personal Telecommunications
URC Utility Ready Computing
URI Uniform Resource Identifier
URLuniform resource locator
URL Uniform Resource Locator
URN Uniform Resource Name
uRPF Unicast Reverse Path Forwarding
URT universal receiver transmitter
URT User Registration Tool
USBuniversal serial bus
USB Universal Serial Bus
USB Upper Side Band
USF Universal Service Fund
USG UNIX Systems Group
USHER United States Higher Education Root Certificate Authority
USL UNIX System Laboratories
USM Unifed Service Model
USM Unsharp masking
USMTuser state migration tool
USMT User State Migration Tool
USO universal service obligation
USP Universal Storage Platform
USP usage sensitive pricing
usr Unix System Resources
USRT Universal Synchronous Receiver Transmitter
USS unformatted system service
UT Upper Tester
UTF-8 Unicode Transformation Format 8
UTM Unified Threat Management
UTM Universal Transverse Mercator
UTPunshielded twisted pair
UTP Unshielded twisted pair
UTSL Use The Source Luke
UUCP Unix to Unix Copy
UUEE Unix-to-Unix Encode
UUENCODE Unix to Unix Encoding
UUG Unix User Group
UUID Universally Unique Identifier
UUT Unit Under Test
UV UltraViolet light
UWB Ultra-Wide-Band
UWIN Unix for WINdows
UXGAultra extended graphics array
UXP user experience
V H Vertical and horizontal grid points
V2P Virtual to physical
VA virtual assistant
VAD Value-Added Distributor
VAD Voice Activity Detection
VADP vStorage APIs for Data Protection
VAIO Video Audio Integrated Operation
VAN Value-Added Network
VAR value-added reseller
VAROS VAriable Refraction Optical System
VATH Visual, Auditory, Tactile, Haptic
VAX Virtual Address Extension
VB Visual Basic
VBA Virtual backup appliance
VBA Visual Basic for Applications
vBNS very high-speed Backbone Network Service
VBR variable bit rate
VBR Very Busy Run
VBUG Voice Browser Usability Group
VBX Visual Basic Custom Control
VC Videoconference
VC Virtual Channel
VC Virtual circuit
VCB VMware Consolidated Backup
VCC Voice Call Continuity
VCD Video Compact Disc
VCDX VMware Certified Design Expert
VCI Virtual Channel Identifier
VCM Virtual Channel Memory
VCO voltage-controlled oscillator
VCP Value Chain Planning
VCP VMware Certified Professional
VCR video cassette recorder
VD Virtual Disk
Vdeck Video Deck
VDI Virtual desktop infrastructure
VDR virtual deal room
VDS Variable Drop Size
VDS visual data stream
VDSL very high-speed digital subscriber line
VDT Video Display Terminal
VDU Visual Display Unit
VEP vertical enterprise portal
Veronica Very Easy Rodent Oriented Net-wide Index to Computerized Archives
VESAVideo Electronics Standards Association
VESA Video Electronics Standards Association
VF Voice Frequency
VFATvirtual file allocation table
VFM virtual file manager
VGAvideo graphics array
VGA Video Graphics Array
VGF voice grade facility
VHD Virtual Hard Drive
VHDL VLSI Hardware Description Language
VHDTS Very High Density Thumb Screw
VHF very high frequency
VHLL Very-High-Level Language
VHM Voice Health Monitor
VHS video home system
VIC Voice Interface Card
VIMVendor Independent Messaging protocol
VIM Vendor Independent Messaging
Vines VIrtual NEtwork System
VIO virtual input/output
VIP VeriSign Identity Protection
VITAL VHDL Initiative for the Standardization of ASICÂ Libraries
VIVO Video In Vide o Out
VLA Volume License Agreement
VLAN Virtual local area network
VLAN virtual local-area network
VLC VideoLan Client
VLDB very large database
VLE Virtual Learning Environment
VLF Very Low Frequency
VLF Virtual Log File
VLIW Very Long Instruction Word
VLK Volume License Key
VLL Virtual Leased Line
VLR Visitor Location Register
VLS Virtual Library Systems
VLSI Very Large Scale of Integration
VLSM Variable Length Subnet Masking
VLSM Variable-length subnet masking
VM virtual machine
v-mail Video mail
VMDQ Virtual Machine Device Queues
VMEbus VersaModule Eurocard bus
VMI vendor-managed inventory
VML Vector Markup Language
VMM virtual machine monitor
VMS Virtual Memory System
VMS Vocabulary Management Solution
VMS Voice Message Service
VNC Virtual Network Computing
VNL via net loss
VNO virtual network operator
VoD Video On Demand
Vodcast video podcasting
VoIPvoice over internet protocol
VoIP voice over Internet Protocol
Voken virtual token
VOM Volt-Ohm-Milliammeter
VOP Velocity of Propagation
vortal Vertical portal
VOX Voice Operated eXchange
voxel Volume pixel, or volume picture element
VoxML Voice Markup Language
VPA valid printable area
VPA Volume Procurement Amendment
VPD Vital Product Data
VPDN Virtual Private Dial-up Network
VPI Virtual Path Indentifier
VPLS virtual private LAN service
VPNvirtual private network
VPNVirtual Private Networking
VPN Virtual private network
VPS Vectors Per Second
VPS Virtual private server
VQF Vector Quantization Format
VR Virtual reality
VRAMvideo random access memory
VRC Vertical Redundancy Check
VRF VPN routing/forwarding instance
VRM voltage regulator module
VRML Virtual Reality Modeling Language
VRRP Virtual Router Redundancy Protocol
VRS Virtual Reference Station
VRT Variable-Rate Technology
VRU voice response unit
VSAM Virtual Sequential Access Method
VSAM Virtual Storage Access Method
VSAT very small aperture terminal
VSB very severe burst
VSB Vestigial sideband
VSD ViSio Diagram
VSE Virtual Storage Extended
VSELP Vector Sum Excited Linear Predictive
VSIP Visual Studio Industry Partners
VSM Value Stream Mapping
VSN volume serial number
VSNL Videsh Sanchar Nigam Limited
VSP VoIP Service Provider
VSR Vertical Scan Rate
VSS vector symbol set
VSS Volume Shadow Copy
VSwitch Virtual Switch
VSWR Voltage Standing Wave Ratio
VTAM Virtual Table Access Method
VTAM Virtual Telecommunications Access Method
VTL virtual tape library
VTOC Volume Table of Contents
VTP Vlan Trunking Protocol
VTS virtual tape subsystem
VT-x/i or d or c Virtualization Technology-Itanium
VTY Virtual teleTYpewriter
VUE Visual User Environment
VVM Veritas Volume Manager
VVR Veritas Volume Replicator
VWE virtual work environment
VWIC Voice/Wan Interface Card
VWS Virtual Web Server
VxD / VDD Virtual Device Driver
W3CWorld Wide Web Consortium
W3C World Wide Web Consortium
WAA Wide Area Adapter
WAAS Wide Area Augmentation System
WAB Windows Address Book
WAC Wholesale Applications Community
WACK / WAK Wait acknowledgement
WADS write-ahead data set
WAE Wireless Application Environment
WAF Web application firewall
WAI-ARIA Web Accessibility Initiative - Accessible Rich Internet Applications
WAIS Wide Area Information Servers
WAL wats access line
WALE wats access line extension
WAMP Windows, Apache, Mysql, PHP (or Perl or Phyton)
WANwide area network
WAN Wide-area network
WAPwireless application protocol
WAP Wireless Application Protocol
WARIA Workflow And Reengineering International Association
WAS Web Application Server
WATS Wide Area Telecommunications/Telephone Service
WAVE Engine
WAVE Wide Area VirtualizationÂ
WBEM Web-Based Enterprise Management
WBMP Wireless BitMaP
WCF Windows Communication Foundation
WCS Web customer service
WCS Websphere Commerce Server
WD Western Digital
WDDM Windows Display Driver Model
WDDX Web Distributed Data Exchange
WDF Windows Driver Foundation
WDM Wavelength Division Multiplexing
WDOG Watchdog protocol
WDS Wireless Distribution System
WDT watchdog timer
WebCam WEB CAMera
WebDAV Web-based Distributed Authoring and Versioning
webinar (web seminar)
WEEE Waste Electrical and Electronic Equipment
WEPwired equivalent privacy
WEP Wired Equivalent Privacy
WES Websense Email Security
WFM Wired For Management Baseline
WfMC WorkFlow Management Coalition
WFO workforce optimization
WFQ weighted fair queuing
WGA Windows Genuine Advantage
WHISPER Windows Highly Intelligent SPEech Recognition
WHQL Windows Hardware Quality Lab
WIA Windows Image Acquisition
WiBro Wireless Broadband
WIC Wan Interface Card
WIFIwireless fidelity
Wi-Fi IEEE 802.11 (Wi-Fi Alliance)
Wi-Fi Wireless Fidelity
wiki What I Know Is
WiMax World Interoperability for Microwave Access
WIMPS windows, icons, menus, pointers, scroll bars
WINE Wine Is Not an Emulator
WinFS Windows Future Storage
Winkey Windows key
WINSwindows internet name service
WINS Windows Internet Name Service
Winsock Windows sockets
Wintel (slang) Windows and Intel
WIPO World Intellectual Properties Organization
WLANwireless local area network
WLAN wireless LAN
WLL wireless local loop
WMI Windows Management Instrumentation
WML Website Meta Language
WML Wireless Markup Language
WMOS Warehouse Management for Open Systems
WMP Windows Media Player
WMS warehouse management system
WOA Web-oriented architecture
WORM write once, read many
WOS Wireless Office Systems
WOSA Windows Open Service Architecture
WOW World of Warcraft
WOW World Organization of Webmasters
WPAwireless protected access
WPA Wi-Fi Protected Access
WPAD Web Proxy AutoDiscovery
WPAR Workload PARtition
WPF Windows Presentation Foundation
WPLO Warranty Parts/Labor/Onsite
wpm Words Per Minute
WPN Worldwide Port Name
WQUXGA Wide Quad Ultra eXtended Graphics Array
WRC World Radiocommunication Conference
WRED Weighted Random Early Detection
WRS Wind River Systems
WRT Weighted Risk Trend
WSC Windows Security Center
WSD white space device
WSE Web Services Enhancements
WSFC Windows Server Failover Clustering
WSJ Wall Street Journal
WSP Web Standards Project
WSP Wireless Session Protocol
WSS Windows Sharepoint Services
WS-Secuirty Web Services Security
WTG Wily Transaction Generator
WTL Windows Template Library
WTLS Wireless Transport Layer Security
WTX Workstation Technology eXtended
WUS Windows Update Services
WUXGAwide ultra extended graphics array
WVA Wide Viewing Angle
WWAN wireless wide-area network
WWN World wide name
WWNN worldwide node name
WWPN worldwide port name
www World Wide Web
WYSIWYG what you see is what you get
WZC Wireless Zero Configuration
X3D Extensible 3D Graphics
x86 8086 processor
XaaS anything as a service
XACML Extensible Access Control Markup Language
XAF eXpressApplication Framework
XAMPP Cross-platform/Apache/MySQL/PHP/Perl
XBL XMLÂ Binding Language
XBMC XBox Media Center
XBRL Extensible Business Reporting Language
XCP eXtended Copy Protection
XDCC Xabi DCC or eXtended DCC
XDE eXtended Development Experience
XDM X Display Manager
XDO extended data object
XDR eXternal Data Representation
xDSL x digital subscriber line
XE Express Edition
XFDL Extensible Forms Description Language
XFN XHTML Friends Network
xfr transfer
XGAextended graphics array
XGA Extended Graphics Array
XHR XmlHttpRequest
XHTML Extensible Hypertext Markup Language
XID exchange identification
XID exchange station ID
XIL X Imaging Library
XLF Extensible Log Format
XLL Extensible Linking Language
XLS eXceL Spreadsheet
XMCL Extensible Media Commerce Language
XMI XML Metadata Interchange
XMLExtensible Markup Language
XML Extensible Markup Language
XMLC eXtensible Markup Language Compiler
XMLRPC XML Remote Procedure Call
XMP eXtensible Metadata Platform
XMPP eXtensible Messaging and Presence Protocol
XMS Extended Memory Specification
XMS Xirrus Management System
xmt transmit
XNI Xerces Native Interface
XNRL Xml Namespace Related-resource language
XNS Xerox Network Systems
XO crystal oscillator
XOFF Transmitter off
XoIP Anything Over IP
XON Transmitter on
XOP Xml-binary Optimized Packaging
XOR exclusive-OR gate
XP eXPerience
XP Extreme Programming
XPath XML Path Language
XPFE Cross Platform Front End
xPGK xPEERience gatekeeper/proxy
XPL Carrier Private Line
XPLINK Extra Performance Linkage
XPS Xml Paper Specification
XQL XML Query Language
XRC extended remote copy
XRE Xul Runtime Engine
XrML Extensible Rights Markup Language
XRST extended restart
XSD Xml Schema Definition
XSL extensible Stylesheet Language
XSLT eXtensible Style Language Transformation
XSS Cross-Site Scripting
XT crosstalk
XT Extended Technology
XTI UNIX Transport Layer Interface
XTM Extensible Threat Management
XTP Extreme transaction processing
XTPP extreme transaction processing platform
XTR Efficient Compact Subgroup Trace Representation
XTR Extreme Reality
XUL eXtensible User-interface Language
xVM intersection (x) of virtualization and management
XVT Extensible Virtual Toolkit
XWB eXtend WorkBench
XWSS Xml and WebServices Security
Y2K Year 2000
YA- Yet Another
yacc yet another compiler compiler
YAHU Yet Another Header Utility
YAST Yet Another Setup Tool
YB Yottabyte
YES Yahoo! Enterprise Solutions
YiB Yobibyte
YIM Yahoo! Instant Messenger
YKYBHTLW you know you’ve been hacking too long when
YMMV our mileage may vary
YP Yellow Pages
YPN Yahoo Publishers Network
YUB luminance (Y) chroma (UV)
YYYY-MM-DD Year Year Year Year - Month Month - Day Day
ZAPP Zero Assignment Parallel Processor
ZAW Zero Administration Window
ZB Zettabyte
ZBR Zero Bug Release
ZBR / ZCAV Zoned-bit recording / Zone Constant Angular Velocity
ZBTSI Zero Byte Time Slot Interchange
ZCS zero code suppression
ZCT zero count table
ZDBop Ziff-Davis Benchmark Operation
ZDL Zero Delay Lockout
ZDN / ZDNet Ziff Davis Network
ZDO ZigBee Device Object
Zeroconf zero configuration (IP networking)
ZFS Zettabyte File System
ZIF Zero Insertion Force
ZIL Zork Implementation Language
zine electronic magazine
ZIPzigzag inline package
ZIP Zone Information Protocol
ZLE zero-latency enterprise
ZMA Zone Multicast Address
ZNA Zero Network Administration
ZOPE Z Object Publishing Environment
ZRTP (Zimmerman ) Real-Time Transport Protocol
zsh Z shell
ZTE Zhong Xing Telecommunication Equipment
ZTLP Zero Transmission Level Point
ZV port / ZVP Zoomed Video port
ZZFS zSeries File System

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