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                                                                                  Like rivers flowing through
                   The  concept  of  a  PAN  was  first  introduced  by        landscapes, data on the Internet
                   Thomas Zimmerman at M.I.T.'s Media Lab. It was             travels across networks in streams
                                                                                        of information.
                   later supported by IBM's Almaden research lab.







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



                 CAN (Campus Area Network)

                 CAN, also known as Cluster Area Network connects
                                                                                               Hostel
                 two  or  more  LANs  that  are  limited  to  specific
                 geographical areas, for example, college campus,                                                Lab
                 office building etc. A campus area network is larger         College
                 than LAN since it may span in multiple buildings
                 within a specified area.
                                                                                                      Library
                     TOPOLOGY                                                            Campus Area Network

                 Topology refers to  the geometric arrangement  of  computers or  nodes  in  a network.  The
                 factors that determine the type of topology are cost, flexibility and reliability. There are five

                 different types of topologies. Let us learn about these in detail.
                 Bus Topology

                 In  this  topology,  all  the  nodes  are
                 connected to a single common path. It is
                 simple  and  easy  to  maintain.  Additional
                 nodes can be connected at any point
                 along its length. The major disadvantage
                 of this topology is that fault detection is
                                                                                    Bus Topology
                 difficult,  and  a  failure  in  the  main  cable
                 can bring down the entire network.


                                                Ring Topology

                                                In this topology, all the nodes are connected in a circular path.
                                                The messages travel in clockwise or anti clockwise direction. Any
                                                damage to the cable of any node or device can result in breakdown

                                                of the whole network.


                        Ring Topology

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