Networks

Networks

1. Network definition: A network is a group of computors connected together so they can communicate.

2. LAN and WAN

   • LAN: A local area network- a network based in a small location or single organisation.
   • WAN: A wide area network- a network over a large area or multiple organisations

3. Topology

   • Bus topology
     • Advantadges: Cheap to install
     • Disadvantadges: High chance of catastrophic failure and high chance of collisions.
   • Ring topology
     • Advantadges: Cheap to install and no collisions
     • Disadvantadges: High chance of catastrophic failure and difficult to add new computors
   • Star topology
     • Advantadges: Fast ( low chance of collisions) , easy to add new computors and low chance of catastrophic failure
       • Disadvantadges: Expensive, faiure of switch will take down the network

4. Advantadges of having a network: Consistent user experience, files available on all computors, you can print, use internet, email and use the same software

   • Disadvantadgs or having your computor on a network: Expensive, more room for error, difficult- needs technical expertise and malware- viruses
   • Networks allow compitors to: Share files, share resources and share logins