Networks

Networks

1. Disadvantages

   • Expensive
   • problems like viruses could affect every computer on that network
   • Expertise is needed to set up and maintain the network

2. types of networks

   • LAN
     • a network in a small area or small organisation
     • Local Area Network
   • WAN
     • Wide Area Network
     • A network that spans a large area or multiple organisations

3. Advantages

   • Share printers and share internet connections
   • same files are available on whichever computer
   • The same username and passwords can be used on any computer connected to the network

4. Topology's

   • Bus
     • advantage:cheap to install
     • disadvantage:lots of collisions
   • Star
     • advantage:easy to add new computers
     • disadvantage:expensive
   • Ring
     • Advantage: cheap to install
     • disadvantage:high chance of catastrophic failure

5. IP addresses

   • An IP address is a unique value assigned to every computer on a network, used to identify it.
   • Messages on a network have an IP address attached, which is how a computer knows whether or not to keep the message.