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DEFINITION The concept of local area networks (LANs) is not new. It represents a logical development of computer technology. With the advent of microcomputers in the 1980s many office workers began bringing their own disks into work, compromising data integrity. They also began keeping their own databases, which companies did not like. The answer was to create a computer network. A computer network is a group of computers connected together enabling users to share resources and communicate with each other. Resources can be hardware, software, or data. Without a network, each employee might require a dedicated printer connected to his workstation or individual copies of application software loaded on his workstation. A network will also allow dissimilar computers to communicate and share resources. This means that an IBM PC can communicate with an Apple Macintosh with ease. There are three general types of networks: Local Area Networks (LANs), Metropolitan Area Networks (MANs), and...

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