Networks

Networks

1. LAN

   • local area network

2. WAN

   • Wide area network

3. Advantages

   • Communicate with others.
   • If a computer breaks you can access data from a different one.

4. Disadvantages

   • Could be hacked.

5. Topologies

   • Bus
     • Cheap
     • Data Collisions
   • Ring
     • Very slow
     • Cheap
     • Catastrophic failure
   • Star
     • Fast
     • Easy to add new computers
   • Mesh
     • Strongest as there is always a way through.
       • Impossible to break

6. IP Addresses

   • Assigned to every computer.
   • not enough.
   • External and Internal
   • 4 Billion IP Addresses
     • 4 Billion Networks
       • 4 Billion devices on every network

7. Internet

   • Loads if inter webbed networks
   • Packets
     • Get sent at the lowest cost.
     • Small bits of data