Definition, advantages and disadvantages of Star Topology
In Star topology every node (computer workstation or any other peripheral) is connected to central node called hub or switch. The switch is the server and the peripherals are the clients.
Data from the source is first delivered to the hub and is then transferred to the other nodes. It is easy to add or remove nodes or workstations in this topology. Star topology gives better performance as data doesn’t pass through every node unlike Bus topology. If a particular workstation or a node gets an error then the entire network is not affected. But if the central workstation or the hub goes down, then the entire network collapses.
Mostly Star topology uses twisted pair cable, however it can also be used without twisted pair cable.
Advantages of Star Topology
- Easy to install and implement
- Give better performance as messages doesn’t pass through various nodes unlike Bus topology
- Faulty nodes can be easily removed without affecting the other nodes in the loop
Disadvantages of Star Topology
- If the central hub fails then the whole network is disrupted
- If more nodes are to be added then more cable would be required and this would increase the cost
- 3) Data transfer and capability depends on capacity of the central hub
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