A local area network (LAN) is a group of computers and associated devices
that share a common communications line or wireless link. Typically, connected
devices share the resources of a single processor or server within a small
geographic area (for example, within an office building). Usually, the server
has applications and data storage that are shared in common by multiple computer
users. A local area network may serve as few as two or three users (for example,
in a home network) or as many as thousands of users (for example, in an FDDI
network).