Network Topologies

Network Topologies

1. Star Topology

   • Benefits
     • If a device fails, the rest of the network isn't affected.
     • Easy to add new devices
     • Better performance than other networks - no data collisions
   • Problems
     • Every device needs a wire - this can be expensive
     • If the hub/switch breaks, the whole network fails
   • All devices are connected to a central server, hub or switch.

2. Mesh Topology

   • A decentralised network in which every device is connected either directly or indirectly to every other device.
   • Benefits
     • No single point of failure - if one part of the network fails, the rest will still work
     • Versatile (can add and remove devices without affecting rest of network)
     • No data collisions
   • Problems
     • Very expensive, lots of wires are needed.
     • Viruses can be easily transmitted around the network.
     • Files, security and printing cannot be managed centrally
     • Lots of redundant/unused wires