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WAN (Wide Area Network)

                 WAN covers a wide geographical area. In other words, it is a group of computers that are separated
                 by a large distance and tied together. It links different metropolitans and even countries across
                 national boundaries. The most popular example of WAN is the Internet: a collection of an infinite
                 number of computers spread across the world.







                       LAN                     LAN                                  LAN                      LAN











                                                     LAN                        LAN


                                                          Wide Area Network
                 PAN (Personal Area Network)


                 PAN refers to the privately owned network. Pan is used to establish communication amongst the
                 computers within the range of 20 to 30 feet. This type of network can be wired or wireless.





















                                                         Personal Area Network
                    Info Byte

                     The concept of a PAN first was introduced by Thomas Zimmerman at M.I.T.'s Media Lab. It
                     was later supported by IBM's Almaden research lab.


                 CAN (Campus Area Network)

                 CAN, also known as Cluster Area Network, connects two or more LANs that are limited to specific
                 geographical areas. For example, college campus, office building, etc. A campus area network is

                 larger than LAN since it may span in multiple buildings within a specified area.


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