ICT

ICT

1. HCI

   • Layout sutiable to task
   • On Screen Help
   • Differentiation In User Experience
   • Use By Disabled users
     • Braille Keyboard
     • Speech Sythesis
     • Speech Recognition

2. Networks

   • Types of Networks
     • Peer-2-Peer (A network arrangement where each computer has equal status)
       • Advantages
         • Cost Savings
         • Easy To Set Up
         • No Network Manager Needed
         • No Reliance on a Server
         • Lower operating cost
         • Peer Responsibility
       • Disadvantages
         • Backups can't be taken centrally
     • Client Server ( A network where several computers are connected to one or more servers)
       • Advantages
         • Centralised data (all have access to same data)
           • Better Security (centralised, someone's J)ob
           • Backups Taken Centrally
           • Centralised Administration
         • Faster Access To Files
       • Disadvantages
         • More Expensive
         • Need Specialist Knowledge
         • Network dependent on server
   • Topologies
     • Ring
     • Star
     • Bus
       • Definition: All devices on the network are connected to a single cable called the backbone, signals can be sent in either direction of the backbone
       • Disadvantages
       • Advantages

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