Tuesday, November 30, 2021

Types of Network | LAN MAN WAN | Summary of LAN MAN and WAN | Types of network based of geographical area


Types of Networks

Computer networks can be categories by their size as well as their purpose. The size of a network can be expressed by the geographic area. Some of the different networks based on size are:

LAN - Local Area Network

MAN - Metropolitan Area Network

WAN - Wide Area Network

LAN (Local Area Network)

Figure: Local Area Network (LAN)

A local area network (LAN) is a computer network that interconnects computers within a limited area. Example: school, laboratory, university campus or office building.

LAN is widely used for shared medium peer-to-peer communications. Using LAN not only computer but access printer, plotter, database server etc. Range of LAN is single building or campus of up to few km in range. The range of LAN is maximum 5 Kms. Speed of LAN 10/100/1000 Mbps. The LAN is used as private network.

MAN (Metropolitan Area Network)

Figure: Metropolitan Area Network

A metropolitan area network (MAN) is a computer network that interconnects with computer in a metropolitan area like city. MAN is a larger than LAN but smaller than the area covered by a WAN. It is also used to interconnection of several local area network. Range of MAN is 10 km to 100 km. Speed of MAN is 100 Mbps. MANs are based on optical-fibre transmission technology an provide high speed interconnection between sites. It can support both data and voice. IEEE standard of MAN is 802.6.

WAN (Wide Area Network)

Figure: Wide Area Network (WAN)

A wide area network (WAN) is a computer network that exists over a large-scale geographical area. A WAN connects different networks, including local area networks (LAN) and metropolitan area networks (MAN). It may be located within a state or a country or it may be interconnected around the world. Range of WAN is beyond 100 km. Speed of WAN is 10 Mbps.

Summary of LAN – MAN – WAN

Figure: Summary of LAN MAN WAN

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