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LAN (Local Area Network)

              LAN is a short form of Local Area Network. It is a digital communication
              system that interconnects a large number of computers and other
              peripheral devices within a radius of less than 1 km. This type of
              network is usually preferred for a smaller area such as a residence,
              school, laboratory, university campus, or office building. By using the
              LAN network, users can exchange data and messages in an easy and
              fast way. Cables, Wireless Access Points (WAPs), and communication
              devices are used to connect computers to the LAN.

              MAN (Metropolitan Area Network)

              MAN consists of two or more local area networks or campus area networks together that usually spans
              several buildings in the same city or town.






                                           LAN                                         LAN






              WAN (Wide Area Network)

              WAN  is  a  digital  communication  system interconnects  a  large  number  of  computers  over  a  wide
              geographical area.  This network may operate on a worldwide  or nationwide  basis. In such a type
              of network, there may not be a physical connection between computers. In WAN, telephone lines,
              microwave, satellite links, etc. can be used as transmission medium.







                    LAN                       LAN                                   LAN                        LAN











                                                    LAN                        LAN







                                 Imagine computer networks as highways in the sky. What vehicles would travel on these
                                 highways, and what destinations would they reach?






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