Rabin Kalikote

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The largest network formed by connecting computers on LANs, MANs, and WANs of the whole world through the TCP/IP is known as the internet.

It is a publicly accessible network of networks where millions of powerful servers are providing data, files, information, and other facilities to client computers.

Any four services available on the internet are:

1. WWW
2. Email, e-fax, and e-governance.
3. Chat, Video conference, Newsgroup, and telnet.
4. File transferring.

The reasons for keeping the computers on the network are:

1. To share hardware resources.
2. To share the application software, data, files, and so on.
3. To make communication and transmission reliable.
4. To reduce the expenses of computer accessories.

A computer network is the interconnection of computers to share the data, files, hardware, software, and so on. It also makes the communication and transmission reliable In the offices, the files should be transferred from one to other branches very often. Also, the software and hardware can be shared which reduces the cost of buying many items of hardware, software, and so on. So, computer network reduces expenses of offices.

The interconnection of two or more computers by means of transmission media like cable or without cables in order to communicate and share resources data, application software, and hardware is known as a computer network. Its advantages are:

1. Hardware sharing.
2. Data and software sharing.
3. Transfering and communication facilities.
4. Security and reliability.
5. Sharing the resources remove its cost or reduce the cost.