What is computer network and its types?

From Rachna- Answer to Computer NetworkTo Exchange/ Share Data between two or more computers they are linked together using some mediator which can be cables/ Modem. Two or more computers are Interlinked using cables so that they can access to common data. for example if organisation has laser printer which is costly to be shared between 2 or more computers then thru cables computers are linked to printer so both computer can use that printer. There are various types of network according to geograpical area covered by this networks

These networks are

LAN

MAN

WAN