Networks

Networks

1. Types of networks

   • Lan
     • local area network
   • wan
     • wide area network

2. Disadvantages

   • difficulty- expertise is needed to set up and maintain a network
   • increased risk- problems such as viruses can affect every computer on the network
   • cost- networks are expensive to set up.

3. Advantages

   • share resources such as printers and internat connection
   • you can save files no matter what computer you use
   • share logins on every computer

4. Topology

   • BUS
     • advantage- cheap
     • disadvantages- slows down as more computers are added
   • Ring
     • disadvantages- difficult to expand
     • advantage- it is cheap and no collisions
   • Star
     • advantage- low chance of failure
     • disadvantages- expensive and neesds switch

5. IP

   • internet protacal
   • an ip address is a unique value assignes to every computer on a network, used to indentify it
   • messages on a network have an ip address attaches which is how a computer knows weather or not to keep the message