network

network

1. topologies

   • bus
     • straight line with stuff connected to it.
       • cheap to install
       • high chance of catastrophic failure
       • slows when more computers added
   • ring
     • everything is connected in a circle
       • cheap to install
       • no collisions (fast)
       • high chance of catastrophic failure
       • difficult to expand
   • star
     • all devices are connected to a switch in the middle
       • low chance if failure
       • expensive
       • no collisions (fast)
       • depends on a switch

2. types of network

   • lan - local area network
     • a network in a small area or organisation
   • wan - wide area network
     • a network that spans a large area or single organisation

3. network

   • ip address
     • a unique address given to a device
     • 4,228,250,625
       • 86.188.242.210
     • so that messages go to the right device

4. internet

   • large files by being broken down into smaller packets and reassembled
   • mesh topology
     • a jumble of devices with multiple routes
   • the shortest cost from start to finish