Networks (1) - CG

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  • Networks
    • Factors to help determine what network to choose
      • COST: buying equiptment. installing, training, maintenance e.g budget will determine what cabling to buy
      • HOW IT WILL BE USED: types of applications the users will need, how much data storage they will need
      • EXISTING SYSTEMS: must fit in with existing operating systems
      • PERFORM. REQUIRED: different parts of the network can have different performance requirements
      • SIZE: large organisations need a WAN, smaller may only need a LAN, amount of data they will process (lots=fast switch), types of commun.
    • Types of Network
      • PEER TO PEER: Used in homes and small orgs. All machines have the same status. Can all access resources of other machines.
        • Cost Saving: no server needed so all computers the same
        • Status: same
        • No network manager needed: all users take own responsibility
        • Knowledge: users need more IT knowledge
        • Easy to set up: simplest form of computer network.
        • No reliance on server: no worry about break down
        • Security: poor
        • Backups not made centrally: have to do own
      • CLIENT SERVER: used in large orgs. Has a central server. Server carries out many functions
        • More expensive: servers
        • Cost of set up and maintenance
        • One machine more important than the rest
        • Need specialist knowledge: network manager
        • If server breaks down network in unusable
        • Users need little specialist knowledge as admin is performed centrally
        • Back ups done centrally
        • Centrally stored files: easier to find

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