Networks

Networks

1. LAN

   • Local Area Network

2. WAN

   • Wide Area Network

3. Advantages

   • Everyone can access the files
   • Easy to set up
   • Easy to access anywhere in the world
   • Easy to share with collegues
   • Can share logins

4. Disadvantages

   • Networks are expensive to set up
   • Problems (viruses) can affect every computer network
   • Expertise is needed to set up and maintain a network

5. Networks Allow computers to...

   • Share Files - So the same files are available on whichever computer you use.
   • Share Resources - Such as the same printers and Internet connection.
   • Share Logins - So the same username and password can be used on every computer on the network.

6. Examples

   • College Network - LAN
   • The Internet - WAN
   • Playstation Network - WAN

7. Bus

   • Disadvantages
     • High chance of catastrophic failure
     • High chance of collisions
     • More computers means more collisions
     • Networks gets slower
   • Advantages
     • Cheap to install

8. Ring

   • Advantages
     • Cheap to install
     • No collisions
   • Disadvantages
     • High chance of catastrophic failures
     • Difficult to add new computers

9. Star

   • Disadvantages
     • Expensive
     • Failure of the switch will take done network
   • Advantages
     • Fast
     • Easy to add new computers
     • Low chance of catastrophic failure

10. IP Addresses

    • Internet Protocol Address
    • Unique addresses are assigned to businesses and houses
    • The houses and businesses run their own mini-network inside with different IP Addresses