A Computer Network;
“…is a telecommunications network which allows nodes to share resources. 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.”
In essence, a computer network is a broad term to describe the way in which two or more computers are connected together, in order to be able to share information, resources or other devices that are also connected.
Computer Networking Articles