Networks connect computers in order to share resources including information and peripherals. This ia done through:
A peer-to-peer approach in which the networked computers can be
both servers and clients.
A server-based approach in which certain computers are designated
as servers based on their power, storage capacity, and function in the
network.
A combination of both approachs in which some computers are dedicated
servers but users can share their own resources.
The network is laid out according to one of three topologies: bus, star,
or ring. Networks can also be created from a combination of topologies,
resulting in either a star bus or a star ring.