Network

A network is a setup of two or more computers to communicate with each other and share resources like data/software/hardware.

Based on area of coverage, networks are three types.

1. LAN - Local Area Network
2. MAN - Metropolitan Area Network
3. WAN - Wide Area Network

1. LAN - Local Area Network

• It is a network of several computers in same building.
• Can be in the range up to 1km radius (small geographical area).
• Connected through cables.
• It is simple and cheap network.

2. MAN - Metropolitan Area Network

• It is an interconnection of LAN, acts as connection among multiple buildings.
• Can be in the range within a city.
• Connected through cables.
• It is optimised for longer distances.
• Higher transmission speed than LAN.

3. WAN - Wide Area Network

• It is a network of large scale geographical area.
• It also connects different smaller networks like LAN and MAN.
• It is mainly over telecommunication lines.
• Banks and big organisations use WAN in order to communicate with their branches from other cities/states/countries.