Networks

Networks

1. Types

   • Peer to Peer
     • All computers equal
     • No server
     • Data can be shared between computers
   • Client Server
     • One computer server with other clients going from it
     • Data/Resources can be shared from server
   • Local Area Network
     • All networked computers are on the same site
     • Direct links connecting computer (cables or wireless)
   • Wide Area Network
     • Computers anywhere in the world connected
     • Connected by telephone network or satellites
     • e.g. Internet

2. Topologies

   • Star
     • More expensive than others
     • Reliable, if one cable is broken, network can still continue
   • Ring
     • More affordable than star
     • Data flows in one direction
     • If cable is broken, network fails
   • Bus
     • More expensive than ring but cheaper than star
     • Data flows both ways
     • Central cable is key

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