Network

A wide variety of systems of interconnected components are called networks.

http://en.wikipedia.org/wiki/Network

A computer network is a system for communication among two or more computers.

Computer networks may be categorized with respect to range:

* personal area network (PAN) o wireless PAN (WPAN) * local area network (LAN) o wireless LAN (WLAN) * metropolitan area network (MAN) * wide area network (WAN) * (Tiny area network (TAN)