networks

networks

1. advantages of networks

   • you can share files
   • share resources
     • internet
     • printers
   • share logins

2. disadvantages of using a network

   • easier to hack into
   • errors can have bigger impacts
   • expensive
   • takes a long time to set up
   • increased risk of hackers
     • viruses
     • lagging

3. different types of network

   • WAN
     • Wide Area Network
       • multiple areas
   • LAN
     • Local Area Network
       • one geographical location

4. bus topology

   • advantages
     • easy to set up
     • cheap
   • disadvantages
     • slow
     • data collision
     • catastrophic failure
       • line breaks

5. ring topology

   • disadvantages
     • catastrophic failure
       • line breaks
         • any of the computers break
     • every computer has to be on
     • slow
   • advantages
     • cheap
     • no data collision
       • faster

6. star topology

   • advantages
     • no data collision
     • fast
     • easy to expand
   • disadvantages
     • very expensive
     • catastrophic failure (switch)
       • rarely happens

7. IP addresses

   • a unique number given to every computer on a network
   • 6 billion IP addresses
     • each house or business has its own mini network
   • how a computer knows whether or not to keep a message
   • unique IP addresses are assigned to houses and businesses
   • there are more devices on the internet than its possible to assign a unique address to.
   • Ipv5
   • A valid IP address must be in the form of xxx.xxx.xxx.xxx, where xxx is a number from 0-255.