Networks

Networks

1. types of networks

   • wan
     • wide area network
     • lots of local networks
     • contains multiple areas/organisations
   • lan
     • loca area network
     • company/building

2. advantges

   • easy to control usage and access
   • shared login and files
   • can access anything connected to the network

3. disadvantages

   • if one computed has installed malware all devises connected are affected
   • have to log out of one thing to login into another

4. topology

   • bus
     • cheap
     • high chance of catastrophic failure
   • star
     • low collision
     • low chance of catastrophic failure
     • easy to add new computers
     • expensive
     • if hub is attacked the whole network shuts down
   • bus
     • high collision
   • ring
     • cheap
     • difficult to add new computers
     • one way data so less collisions

5. IP Address

   • IP addresses are the (name of the device)
     • without IP addresses the computer would become impossible to find on other devices on networks
   • there are 4 billion IP addresses so there lots of locations that share the same IP

6. The Internet

   • Packets
     • Packets are pieces of data split up into little pieces
     • packets can be lost hacked and corrupt which is called packet loss and can cause errors
   • The internet is made of a mesh Topology

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