Networks

Networks

1. Advantages

   • Files can be stored on a central computer
   • Files can be backed up more easily
   • sharing devices such as pronters saves money
   • Network users can communicate by email and instant messenger

2. Disadvantages

   • Buying the network cabling can be expensive
   • Viruses can spread to other computers throughout a computer network
   • There is a danger of hacking so security is needed such as a firewall
   • Managing a large network is complicated , requires training and a network manager usally needs to be employed

3. Types of networks

   • Bus network
     • In a bus network all the workstations , servers and printers are joined to one cable which is called the bus.
   • Lan
     • wan
       • Stands for wide area netwrok which covers a wide geographical area
     • Stands for Local area network a lan covers a small area such as one site or a building
   • Ring network
     • A ring netwrok is where each deivce is connected to two ohter devices from a ring
       • Star network

4. A network is a large number of computers connected together

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