Networks

Networks

1. Types of networks

   • LAN: local area network
     • This is used in places such as a school or in a small buisness
   • WAN: wide area network
     • This is used over a larger geographical area

2. Advantages of networks

   • Sharing devices such as printers can save money
   • Files can be shared easily between users
   • Data is easy to back up
   • People can communicate over the network via messaging

3. Disadvantages of networks

   • Purchasing the things needed for a network can be expensive
   • Managing a network can be hard to do
   • Viruses can spread easily through the computer network

4. Bus Network

   • All of the components are joined to one cable eg. the workstations and the printers are all joined together
   • A terminator is fitted at the end of the cable to stop reflection of the signal
   • Advanatages
     • It is easy to install
     • It is cheap to install
   • Disadvanatges
     • The network can become slower
     • If one part of the network breaks the whole thing will be affected

5. Ring network

   • Each device is connected to two others
   • It allows the data to only flow in one direction
   • Advantages
     • The data can be transferred quickly
   • Disadvanatages
     • If the main cable fails then the whole network wont work

6. Star Network

   • Each workstation is connected via their own cable to a switch or a hub
   • Advantages
     • Independant network so if one breaks the others can still work
   • Disadvantages
     • Its hard to install

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