Networks

Networks

1. types of networks

   • wan
     • definition
       • a network that spans over a large area
         • or mulitple organisations
       • wide area network
   • lan
     • definition
       • a network contained in a single location
         • local area network

2. topologys

   • bus
     • advantages
       • this network is cheap to install
     • disadvantages
       • high chance of failure lots of collisions
         • slows down as more computers are added
   • ring
     • advantages
       • it in cheap to installand has no collisions
     • disadvantages
       • it has a high chance of failure and difcult to expand
   • star
     • advantages
       • low chance of failure and no collisions
     • disadvantages
       • it is expensive and it depends on a switch

3. ip address

   • ip addresses are unique to everyone's computer
   • it is like your home address but for your computer
   • they are used to identify each different computer

4. internet

   • packets
     • are huge amounts of data travels around the internet
   • routing
     • the rout the data is heading
     • the lower the cost the quicker the connection
   • mesh topology
     • each node is connected to more than one nodes
   • the internet is a giant mesh of computers