A Local Area network (LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab, school or building. Rarely are LAN computers more than mile apart.
In a typical LAN configuration, one computer is designated as file server. It stores all of the software that can be shared by the computers connected to the file server are called workstations. The workstations can be less powerful than the fife server, and they may have additional software on their hard drives. On most LANs cables are used to connect the network interface cards in each computer . Following Figure indicates the LAN Networks
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