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What is a computer network

Short answer

A computer network is a group of autonomous computers and devices linked by a medium to exchange data and share resources like files and printers. It uses nodes, links, devices, and protocols, classified by scale as PAN, LAN, MAN, WAN.

What is a computer network?

A computer network is a collection of two or more autonomous computers and other devices (printers, servers, routers) interconnected by a communication medium, wired or wireless, so that they can exchange data and share resources such as files, printers, software and an Internet connection.

Main parts are nodes (hosts), links (media), connecting devices (switch, router) and protocols (rules of communication). Networks are classified by size as PAN, LAN, MAN and WAN. Examples are a college computer lab LAN and the Internet.

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