Networks

Networks

1. Types of networks

   • Peer-2-Peer (A network arrangement where each computer is of equal status)
     • Advantages
       • Cost saving (no server needed)
       • No network manager is needed
       • Easy to set up
       • No reliance on a server
       • Lower operating costs
       • Peer responsibility (users decide what files they share)
     • Disadvantages
       • Data can't be becked up centrally so you have to rely on users backing up their own data.
   • Client Server ( A network where several computers are connected to one or more servers)
     • Advantages
       • Better Security (centralised, someone's Job)
         • Easy to install antivirus software
       • Centralised data (all users have access to the same data)
         • Easy to update software
       • Backups are taken centrally
       • Faster access to files and programs
       • Centralised administraton
     • Disadvantages
       • Servers are expensive to buy and run
       • Require specialist knowledge
       • Software is sophisticated and expensive
       • If server breaks down Network can't function

2. Topologies

   • Bus Topology
     • Definition: All devices on the network are connected to a shared cable called the backbone, Signals are sent either way down the backbone.
     • Advantages
       • Cost effective due to small amount of cable needed.
       • Simple cable runs makes it easy to install

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