Networks

Networks

1. Disadvantages

   • Expensive to set up
   • Difficult to set up
   • If one is hacked the others are too

2. Types of networks

   • WAN
     • Wide Area Network
       • World wide coverage
   • WI-FI
     • building coverage
   • LAN
     • Local Area Network
       • One geographical location location

3. Topologies

   • Bus
     • straight line
       • disadvantages
         • high chance of catastrophic failure
         • high chance of collisions
       • advantages
         • cheap
         • easy to setup
   • star
     • shape of a star with a switch/hub in the middle
       • Disadvantages
         • Expensive
         • Depends on switch
       • advantages
         • Low chance of failure
         • No collisions
   • Ring
     • circle of computers
       • advantages
         • Low chance of collisions (fast)
         • Cheap
       • Disadvantages
         • high chance of catastrophic failure
         • Hard to expand

4. IP Adresses

   • An IP Address is a unique value assigned to every computer on a network
   • An IP is for sending the correct information to the right computer
   • there are 4’228’250’625 IP Addresses
     • they look like this : 86.188.242.210

5. advantages

   • Easier to share files and resources
   • You can log on any computer, not one specific computer

6. Internet

   • The routes are chosen by having the lowest cost from its current location
   • They are sent in smaller packets to a location and are put back at the end
   • Mesh topology
     • They are in no specific order (all over the place)