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Disadvantages

            1.  It is not easy to detect faults.
            2.  In case of any problem with the cable, the entire network breaks down.


            Ring Topology

            In Ring Topology, all the computers and other devices are
            connected to each other in a closed circuit. There is no
            central device to link the network as in bus topology. It

            forms a continuous pathway for signals through each node
            and the communication flows in one direction around the
            ring. Each system can pass data to its adjacent system.

            Advantages

            1.  It is very suitable to use optical fibre cables, which
                 gives very good speed, as a transmission medium.

            2.  It requires less cabling and is less expensive.

            Disadvantage

            Failure in any cable or node can disrupt the entire network.
                                                                                       Computer
            Star Topology

            In  Star  Topology,  all  computers  are               Computer
            connected by cables to a central device hub                                                     Computer
            or  switch.  All  communication  between
            computers passes through the hub or switch
            before it can be transferred to its destination.
            This  topology  is  easy  to  install.  This
            configuration  is  good  for  businesses  that
            have large amounts of rapidly changing data,

            like banks, airline reservation, offices, etc.
                                                                                                        Printer
            Advantages                                                    Computer

            1.  Failure of one computer does not affect the whole network.

            2.  Faults can easily be detected at the central hub and the problem can be rectified by detaching
                 the faulty computer.

            Disadvantages

            1.  Cost of installation is high due to long cable length.

            2.  Failure of the hub or switch can stop the entire network.




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