A computer network is a system in which computers are connected to share information and resources.

A computer on a network is referred to as a workstation.

A computer which isn’t connected to a network is known as a stand-alone.

A file server is a workstation which has central disk storage which can be used by any user on the network.

A print server is a workstation which controls a printer which may be used by any user on the network.

Different workstations on a network can be linked together using hubs or switches. These devices pass signals on from one workstation to another.

Ethernet uses physical wiring to connect devices. Frequently deployed devices include hubs, switches, bridges and/or routers.

Wireless LAN technology is designed to connect devices without wiring. These devices use radio waves or infrared signals as a transmission medium.

There are many different types of networks but here we are going to discuss just 2 of them:

1. Local Area Network (LAN)

2. Wide Area Network (WAN)

Computer networks may also be classified according to the network topology. Network topology is the “physical” layout of a network.

There are 3 basic types of topology in networks:

1. Bus topology

2. Star topology

3. Ring topology

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