NETWORKS

NETWORKS

1. advantages

   • share files
     • so you can use the same files on multiple computers/devices
   • share rescources
     • such as printers and internet connection
   • share logins
     • so the same username and password can be used on every computer connected to the network

2. disadvantages

   • cost
   • increased risks

3. types of networks

   • LAN
     • Local Area Network
     • a network in a small area or single organisation
   • WAN
     • Wide Area Network
     • a network that spans a large area or multiple organisations

4. topologys

   • network topology
     • advantages
       • cheap to install
     • disadvantages
       • high chance of catastrophic failure
       • lots of collisions
       • slow
   • ring topology
     • advantages
       • cheap
       • no collisions
     • disadvantages
       • difficult to expand
       • high chance of catastrophic failure
   • star topology
     • advantages
       • fast
       • easy to expand
       • low chance of failure
     • disadvantages
       • expensive
       • failure of switch results in network failure

5. IP Addresses

   • unique value
   • asssigned to every computer on the internet used to idenify it
   • assigned to buissineses and houses
   • households and buissineses run their own mini network