Page 125 - Webapplication11_C11_Flipbook
P. 125

1.6 NETWORK TOPOLOGIES
                 Everyone wants a fast, reliable internet connection, but businesses need it even more. Businesses may encounter
                 downtime,  an  unpredictable  connection,  and  an  overall  frustrating  work  experience  if  they  do  not  have  a  high-
                 performing network. All of these circumstances may push the business to incur needless expenses. Of course, a decent
                 connection starts with your internet provider, but there are several additional aspects to consider.
                 First and foremost, do you have a wireless, wired, or hybrid network? There’s no denying that connecting wirelessly
                 is more convenient, especially now that wireless carriers, routers, and modems have advanced dramatically. Wireless
                 networks, on the other hand, are more prone to interference. Wired networks provide the highest possible connection,
                 security, and dependability. Although employing a wired network is sufficient, you must also take into account the
                 many forms of network topologies. A topology describes how devices (or nodes) are connected. Different types of
                 network topologies are as follows:


                                                             Network Topologies






                              BUS               RING               STAR              MESH                TREE
                 The above topologies are categorised into two categories:

                 Ð ÐBroadcast Topology: All nodes in a broadcast topology share the same physical link. All nodes receive when one
                   broadcasts. When more than one node transmits at the same time, there is a collision resolution mechanism in
                   place to handle it. Examples of broadcast topology are bus and ring.

                  ÐPoint-to-Point Topology: Every pair of nodes in a point-to-point topology has its own dedicated link. Example of
                 Ð
                   point-to-point topology are star and mesh.
                 Bus Topology


                 A bus topology, by definition, nodes need to be connected in a linear order. In a bus topology system, each device
                 is connected to a single wire. It’s important to realise that a bus and linear topology do not transport data in both
                 directions. In other words, data can only travel in one direction. A bus topology, like all other topologies, has advantages
                 and disadvantages.


                                                      File Server










                                                                Nodes



                 Advantages

                 Ð ÐIt’s the simplest network structure for linking linear peripherals or computers.
                 Ð ÐIt functions exceptionally well for small networks.
                 Ð ÐIt’s simple to add and delete devices from this network without affecting others.
                 Ð ÐIn comparison to mesh and star network topologies, it is quite cost-effective.

                                                                                              Basics of Networking   123
   120   121   122   123   124   125   126   127   128   129   130