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unit 3 - networks - Coggle Diagram

- - - - Data is quickly transferred without a bottleneck – consistent data transfer speeds
      - Adding additional nodes has very little impact on bandwidth
  - - - a problem with the main cable or connection and the entire network goes down
      - It is difficult to troubleshoot the ring
        
        Because nodes are wired together, to add another you must shut down the network
  - - - Each node relays data for the mesh network. All mesh nodes cooperate in the distribution of data in the network.
  - - - advantages
        
        Good performance/fast network speed
        
        Easy to set up
        
        Easy to add more computer systems without taking the network down
        
        failure of workstations will have no
      - disadvantages
        
        Expensive to install as more cable is required
        
        Extra hardware required, such as a hub
    - - Computer A adds computer D’s address to packet
        
        Computer A sends packet to switch
        
        Switch looks at address on packet
        
        Switch compares to stored list of addresses on network
        
        Switch forwards packet to computer D’s address
- - - - The bus has terminators on each end, which are needed to close each end of the cable.
        
        The bus carries data packets along the cable
        
        As the packets arrive at each computer system, it checks the destination address contained in the packet to see if it matches its own.
        
        If the address does not match, the computer system ignores the packet. If the address of the computer system matches that contained in the packet, it processes the data.
    - - Easy to add more computer systems to the network without disrupting the network
        
        Quick and easy to set up – well suited for temporary networks
        
        Cost-effective as less cabling is needed
      - disadvantages
        
        It is difficult to troubleshoot the bus if there’s a fault
        
        Low security – all computers on the bus can see all data transmissions