Tuesday, September 20, 2016

Computer Network & types


The collection of autonomous computers interconnected by a single technology is called computer network.
Types of network
LOCAL AREA NETWORK-LAN
A local area network (LAN) is a group of computers and associated devices that share a common communications line or wireless link. Range starts from 100 Mbps. Upper limit-10 km, Lower limit-1 km. Used in single room, campus etc.
CAMPUS AREA NETWORK-CAN
CAN is a network of multiple interconnected LAN, in a limited geographical area.
METROPOLITAN AREA NETWORK-MAN
The metropolitan area network (MAN) is designed to extend over an entire city. A MAN uses distributed queue dual bus. Range: Within 100 km (a city).
WIDE AREA NETWORK-WAN
Network that provides long distance transmission of data, voice, image and video information over large geographical areas that may comprise a country, a continent. Range: Beyond 100 km.