Network Topologies

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  • Types of network available (continued)
    • Ring topology
      • Also a peer-to-peer networm because there is no server
        • All computers are arranged in a circle
        • Data sent by one computer passes around the ring until it reaches the correct computer
      • Advantages
        • Network is not dependent on a central computer
        • Each computer has the same access as the others
      • Disadvantages
        • If there is a break in the connection the whole network fails
        • Faults are difficult to locate
        • Impossible to keep the network running whilst equipment is added or removed
    • Bus topology
      • All devices connected to the network are connected to a common shared cable called the backbone.
      • Advantages
        • Cost-effective due to small amount of cable needed
        • Simple cable runs makes it easy to install
        • Easy to add extra devices to the network
      • Disadvantages
        • If more than 12 devices are connected, the performance of the network is degraded
        • If there is a break in the backbone cable, then the network cannot be used
    • Star topology
      • Uses a central connection point to connect all devices on the network together
      • Advantages
        • Fault tolerant
        • Load tolerant
        • Easy to add extra computers
      • Disadvantages
        • Higher cost
        • Dependence on the central hub, switch or router


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