Computer Network

“Computer networks” redirects here. For the periodical, see Computer Networks (journal).


“Datacom” redirects here. For other uses, see Datacom (disambiguation).


A computer network, often simply referred to as a network, is a collection of computers
and devices interconnected by communications channels that facilitate
communications and allows sharing of resources and information among
interconnected devices.[1] Computer networking or Data communications (Datacom) is the engineering discipline concerned with the computer networks. Computer networking is sometimes considered a sub-discipline of electrical engineering, telecommunications, computer science, information technology and/or computer engineering since it relies heavily upon the theoretical and practical application of these scientific and engineering disciplines.


Networks may be classified according to a wide variety of characteristics such as medium used to transport the data, communications protocol used, scale, topology, organizational scope, etc.


A communications protocol defines the formats and rules for exchanging information via a network. Well-known communications protocols are Ethernet, which is a family of protocols used in LANs, the Internet Protocol Suite, which is used not only in the eponymous Internet, but today nearly ubiquitously in any computer network.

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