Introduction to Computer Networking

This is the start of computer network post series. In this post I would like to make introduction about computer network. In my undergraduate degree program currently in level two as a subject I am studying computer network.

First what is computer network? We can consider computer network as”  Collection of computers & devices connected by communication channels that facilitate communication among the users and allow users to share resources with other users”.

But remember” A single computer system with its peripherals such as printers, scanners etc. is not considered as a network”.

·         There are lot of advantages in computer networks. Some of them are,

•       Accessing databases, transferring, processing and retrieval of data can be done on-line.
•      Online credit card checking, e-commerce and Electronic Fund Transfer are possible.
•      Easily administered.
•       Provides an efficient means of communication such as e-mail, Voice mail, and Video conferencing.
•       Users can be easily added or removed.
•       Tasks of distributed nature can be processed by distributed computer systems by exchanging data.
•       Provides a way to share data, programs, peripherals, computing power and information.
•       Provides data security (Comparing to other communication devices).

The major issue regarding to computer network is the security of a computer network is challenged everyday by equipment malfunctions, system failures, computer hackers, virus attacks.