computer network, or simply a network, is a collection of computers and other hardware interconnected by communication channels that allow sharing of resources and information.[1]
Where at least one process in one device is able to send/receive data
to/from at least one process residing in a remote device, then the two
devices are said to be in a network. Simply, more than one computer
interconnected through a communication medium for information
interchange is called a computer network.
Networks may be classified according to a wide variety of characteristics, such as the medium used to transport the data, communications protocol used, scale, topology, benefit, and organizational scope.
Communications protocols define the rules and data formats for
exchanging information in a computer network, and provide the basis for network programming. Well-known communications protocols include two Ethernet, a hardware and link layer standard that is ubiquitous in local area networks, and the Internet protocol suite,
which defines a set of protocols for internetworking, i.e. for data
communication between multiple networks, as well as host-to-host data
transfer, and application-specific data transmission formats.
Computer networking is sometimes considered a sub-discipline of electrical engineering, telecommunications, computer science, information technology or computer engineering, since it relies upon the theoretical and practical application of these disciplines.
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