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1. Types of networks

   • WAN
     • Wide area network- a network that spans a large area or multiple organisations
   • LAN
     • Local area network-a network in a small or single organisation

2. Advantages

   • You can save files no matter what computer you use
   • You can share resources such as printers or internet connection
   • Share logins on every computer

3. Disadvantages

   • Networks are expensive to set up
   • Problems such as viruses can affect every computer on the network
   • Expertise are needed to set up nd maintain a network

4. Topologies

   • Ring
     • Advantages
       • Cheap to install
         • No collisions(fast)
     • Disadvantages
       • High chance of failure
         • Difficult to expand
   • Star
     • Advantages
       • Low chance of failure
         • No collisions (fast)
     • Disadvantages
       • Very expensive
         • All depends on one switch
   • Bus
     • Advantages
       • Cheap to install
     • disadvantages:
       • High chance of catastrophic failure
         • Lots of collisions
           • Slows down as more computers are added