This tutorial explains what a DNS resolver is and how it is different from a DNS server. Learn why we use a DNS resolver and where it is located in the network.

This tutorial explains the differences between operating software and application software. Learn how an operating software is different from an application sof

This tutorial explains the differences between LAN, CAN, MAN, and WAN. Learn the characteristics of LAN, CAN, MAN, and WAN computer networks.

This tutorial explains the differences between low-level protocols and high-level protocols. Learn what the lower-level and higher-level protocols are.

This tutorial describes what the Internet is and how it is different from an internet. Learn the advantages, disadvantages, and some most common usages of the Internet.

This tutorial explains what data encryption is and how it works. Learn the basic concepts of encryption, types of encryption, and differences between Symmetric and Asymmetric encryption.