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WAN (Wide Area Network)

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






                       LAN                       LAN                                LAN                       LAN











                                                       LAN                        LAN




                                                            Wide Area Network

                  PAN (Personal Area Network)

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




                                                                                  Just as red blood cells carry
                                                                                  oxygen and white blood cells
                                                                                  fight infections, data packets
                                                                               deliver information while security
                                                                                  protocols protect a network.






                                     Personal Area Network


                  CAN (Campus Area Network)

                  CAN, also known as Cluster Area Network connects two or                              Hostel
                  more  LANs  that  are  limited  to  specific  geographical  areas,

                  such as college campus, office building etc. A campus area                                       Lab
                                                                                          College
                  network is larger than LAN, as it may span in multiple buildings
                  within a specified area.
                                                                                                       Library
                                                                                              Campus Area Network


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