Networks

Networks

1. Topologies

   • STAR
     • DISADVANTAGES
       • Harder to maintain
       • More software and hardware needed to set it up = more expensive
       • Hub/Switch fail = network down.
     • ADVANTAGES
       • Robust - problems don't affect the whole network.
       • Fewer collisions = faster
   • RING
     • ADVANTAGES
       • Data only travels in one direction, so there are few collisions and data transfer is very fast.
     • DISADVANTAGES
       • Issues with the backbone can bring down the whole network.
       • Data passes through each node, which makes then venerable to malfunctions.
   • BUS
     • ADVANTAGES
       • Cheap
       • Easy to set up
     • DISADVANTAGES
       • Limited distance can be covered
       • Issues with the backbone will bring the whole network down
       • Many data collisions = slow
       • Nodes can 'see' each other, which is a security risk
   • The layout of network components; cabling and node positions.

2. A collection of connected computers and their peripherals. They can share DATA, SOFTWARE and PERIPHERALS.

3. Network Types

   • Peer-to-peer
   • Client-Server

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