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MAN (Metropolitan Area Network)

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







                                             LAN                                        LAN







                                                        Metropolitan Area Network

                  WAN (Wide Area Network)

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







                      LAN                       LAN                                   LAN                        LAN











                                                      LAN                       LAN



                                                            Wide Area Network






                  PAN (Personal Area Network)

                  These are privately owned networks. PAN is used
                  to  establish  communication  among  computers
                  within the range of 20 to 30 feet. It can be wired
                  or wireless.





                                                                                       Personal Area Network
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