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    TOPOLOGY

                     Topology refers to the physical or logical 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 them.

                     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 very difficult.

                     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 may result in breakdown
                     of the whole network.

                                                          Star Topology

                                                          In this topology, central node acts as a hub to which all the other
                                                          nodes  are connected.  As  compared to the  bus  topology,  star
                                                          topology  requires  more devices  and  cables. The  addition  of  a
                                                          new node to a star topology is easy compared to other topologies
                                                          such as bus as it involves a connection only to the central node.

                                                                                                 #Computer Networking  19

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