Computer Network

A computer network is a telecommunications network which allows computers to exchange data. In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are  established using either cable media or wireless media. The best-known computer network is the Internet. Computer networks support an enormous number of applications such as access to the World Wide Web, video, digital audio, shared use of application and storage servers, printers, and fax machines, and use of email and instant messaging applications as well as many others. Computer networks di er in the transmission medium used to carry their signals, the communications protocols to organize network tra c, the network's size, topology and organizational intent.