networks

networks

1. topologies

   • bus
     • characteristics
     • advantages
       • cheap
     • disadvantages
       • catastrophic faliure
       • collisions
       • high chance of catastrophic failure
       • slows down as more collisions are added
   • ring
     • advantages
       • cheap to install
       • no collisions
       • fast
     • disadvantages
       • high chance of catastrophic failure.
       • difficult to add new computers
   • star
     • advantages
       • fast
       • easy to add new computers
       • low chance of catastrophic
     • disadvantages
       • expensive (needs a load of cabling)
       • failure of switch will switch down the network

2. IP address

   • when a computer is added to a network it ios assigned an IP address.
   • an IP address is a unique value assigned to every computer on a network used to identify it.