what is a computer network

what is a computer network? A computer network is a set of connected computers. Computers on a network are called nodes. The connection between computers can be done via cabling, most commonly the Ethernet cable, or wirelessly through radio waves. Connected computers can share resources, like access to the Internet, printers, file servers, and others. A network is a multipurpose connection, which allows a single computer to do more.

Computer network, two or more computers that are connected with one another for the purpose of communicating data electronically. Besides physically connecting computer and communication devices, a 

network system serves the important function of establishing a cohesive architecture that allows a variety of equipment types to transfer information in a near-seamless fashion.

Computer communication may occur through wires, optical fibres, or radio transmissions. Wired networks may use shielded coaxial cable, similar to the wire connecting a television to a videocassette recorder or an antenna. They can also use simpler unshielded wiring with modular connectors similar to telephone wires. Optical fibres can carry more signals than wires; they are often used for linking buildings on a college campus or corporate site and increasingly for longer distances as telephone companies update their networks.