A group of computers connected so they can communicate share resources and exchange data
A network is a group of two or more computers connected so they can communicate, share resources and exchange information with one another. In a networked environment computers are connected to a network server which acts as the central repository of programs and data to which all users connected to the network have access. Many networks are structured using the client/server model in which individual computers and devices called nodes interact with one another through a central server to which they are all connected.