Star and mesh networks

3. Features of a star topology

Advantages

• Star networks are very reliable. If one connection fails, it does not affect other users
• Very few data collisions as each node has its own cable to the server
• Good security - no workstation can interact with another without going through the server first
• Simple to add or remove a node as it has no effect on any other node
• Scalability - can add many new nodes.

Disadvantages

• The most expensive network layout to install because of the amount of cables needed
• Installing the network usually needs experts to set it up
• Extra hardware such as hubs and switches may be needed
• If the central switch or server fails, the whole network is down
• Requires a high performance switch or server in the centre as all traffic passes through it.