networks!

networks!

1. types of networks

   • LAN
     • local area network
   • WAN
     • wide area network

2. disadvantages

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

3. advantages

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

4. Topologies

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

5. IP address

   • Messages are attached to it so the computer knows whether to keep it.
   • Its a unique value assigned to every computer on the network
   • The IP Address is a 32-bit binary value