Star

The star topology revolves around a central node which all other nodes of the system is connected to. The central node can be a computer like a mainframe with links going out to other terminals. It can be a hub with links going out to computers that are workstations and servers. The central computer serves as a switch, directing data to its intended destination.

A message with data and address is created then sent to the central node. The central node reads the address and sends it to the intended destination.

Advantages

  • If one node fails or a cable breaks, the rest of the system can still function
  • If the central node is powerful enough, it can handle large amounts of nodes
  • Easy to add or remove nodes
  • It is easy to identify a faulty cable

Disadvantages

  • If the central node fails the whole system cannot function.
  • Limited to the power of the central node
  • large amounts of cabling