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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 easier compared  to  other

                  topologies such as bus as it involves a connection only to the
                  central node.


                                                                                                Star Topology
                                                                 Tree Topology


                                                                 In this topology, nodes are connected as branches
                                                                 of a tree where hub acts as a root node. It is scalable
                                                                 as it is easier to add  new  or  remove the  faulty
                                                                 nodes. However, its major disadvantage is that if
                                                                 the root node fails to operate, the entire network
                                                                 is inoperable.
                                 Tree Topology

                  Mesh Topology

                  In this topology, every single node in a network is connected
                  to all the other nodes or computers in the network. There
                  are minimal chances of breakdown in this topology. This
                  topology is mostly used in LANs.


                                                                                                Mesh Topology
                      NETWORK ARCHITECTURE

                  The network architecture defines the overall design of the computer network. There are two
                  types of network architectures.

                  Peer-to-Peer Network


                  It is a  network  of  two  or  more  computers  that  uses the
                  same type of program to share the data.  Each computer is
                  considered to have equal responsibilities and acts like a server
                  to the other computers in the network. It works well in small
                  environment.
                                                                                             Peer-to-Peer Network
                  Client-Server Network

                  It is a network in which one computer is designated as the server and all the other computers
                  connected on the network are called the clients. The clients can request for the services from the
                  server. This is called the client-server network.






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