networks

networks

1. disadvantages

   • easier to hack and if hacked the hacker will have access to every computer on the network
   • if one computer gets a virus they will all get it
   • expensive

2. advantages

   • easy communication
   • file sharing
   • can sign in to you're account on any computer

3. type of networks

   • SAN
   • WAN
   • LAN
   • the internet

4. TOPOLOGIES

   • Bus topology
     • disadvantages
       • high chance of catastrophic failure
       • hard to add a new device
       • lots of collisions
     • advantages
       • cheap
   • Star topolgy
     • advantages
       • easy to connect new device
       • effective
     • disadvantages
       • expensive
       • could easily fail if connection lost
   • Ring topology
     • disadvantages
       • high chance of catastrophic failure
     • advantages
       • cheap
       • easy to add new device
       • no collisions
   • mesh topology
     • disadvantages
       • expensive
       • complex structure
       • difficult to set up initialy
     • advantages
       • almost impossible to take down
       • scalability is simple
       • easy to add new devices
   • The internet
     • The internet is a mesh network of computers that are all inter connected hense the name internet. When data is sent from one computer to another it is separated into small chuncks called packets and reassembled when its all sent over.

5. IP address

   • an IP address is a set of numbers assigned to every device on the internet. They are all different so that a message isn't sent to the wrong person.the problem now though is we are running out of IP address' because there is too many devices on the internet now, we can solve this by making one singular IP address for every families network.