networks

networks

1. types of networks

   • LAN
     • local area network.
       • a network in a small area
         • multiple organisations
   • WAN
     • wide area network
       • a network that spans a large area or multiple organisations.

2. disadvantages

   • cost
     • networks are expensive to set up
   • increased risk
     • problems such as viruses can effect every computer on the system
   • difficulty
     • expertise is needed to set up and maintain a network

3. other onfo

   • share files so the same files are avilable whichever computer you see
   • share resources such as printers and internet connection

4. topologys

   • it is the arrangement of computers and other elements of a network
   • advantages
     • cheap to install
   • disadvantages
     • high chance of catastrophic failure
     • lots of collisions
     • slows down as more computers are added

5. types of topologys

   • ring topology
     • advantages
       • cheap to install
       • no collisions
     • disadvantages
       • high chance of catastrophic failure
         • difficult to expand
   • bus
     • advantages
       • cheap
         • disadvantage
           • high chance of catastrophic failure
   • star
     • advantages
       • low chance of failure
         • disadvantage
           • expensive