networkss

networkss

1. types of network

   • WAN
     • wide area network
     • multiple organisations
   • LAN
     • local area network
     • single organisation

2. advantages

   • files
     • any computer has your files on that you use even if created from another
   • resources
     • printing internet access emails software used on any computer
   • logging in
     • any computer you log on to in school uses the same password and username

3. Ip address

   • messages are attached to it so the computer knows weather to keep it
   • the IP address is a32 bit binary value
   • its a unique value assigned to computer on the network

4. topologies

   • star topology
     • it depends in a switch
     • very expensive
     • no collisions (fast)
     • low chance of failure
   • ring topology
     • difficult to expand
     • no collisions (fast)
     • very cheap to install
   • bus topology
     • cheap to install
     • lots of collisions
     • slows down as more computer are added
     • has a high chance of catastrophic faliure

5. disadvantages

   • difficultly
     • expertise is needed to set up/maintain a network
   • cost
     • networks are expensive to run/set up
   • increased risks
     • problems with them all linked such as viruses effecting every computer on the network