Network Topologies

Connecting two computers together is a straightforward task. However, connecting several computers together is different:

• They can be connected in a variety of ways (Fig. 3.12).
• Advantages and disadvantages of each method of connection.
• Star, Hierarchical and Loop configurations are all point-to-point topologies:
  • Each computer communicates directly with its neighbour.
  • Relies on Neighbour to rely data around network.
  • Problems if on computer fails.
  • Star extreme example as a central computer is present. If this fails ....

Figure: Network Topologies

• Bus and Ring configurations are called broadcast topologies.
  • A message is placed on the bus or ring containing the name of the intended receiving computer.
  • All computers listen constantly.
  • If name identified by listener, message is captured.
  • Only one node can broadcast at a time: Needs a Protocol.
  • Bus and Ring Topologies very common.