Computer networks (CNs) have indeed become indispensable now. Hence we need to study (CNs) in terms of their basic components, their architecture, and how they support Internet applications in a typical enterprise. All of these affect our daily life.

A (CN) is a fundamental system to connect different computers from anywhere and allows them to share resources. Computer networking can be implemented to connect computers at home, at a workplace, and even two computers operating from different places.

Apart from at home and in the office, (CNs) are present in all mass transport systems for the smooth operation of ticketing systems, carriage signaling, and safety protection and performance analysis. Doing business requires computer networks as well. When we eat or shop, (CNs) come in to connect the ordering, inventory, and payment systems.