Networks mind map

Networks mind map

1. types of Network

   • lan
     • a network in a small area or single organisation
   • wan
     • a network that spans a large area or multipul organisations

2. advantages

   • share files
     • can send others your work
   • share resources
     • help others with there interests or things like schoolwork
   • share logins
     • you can log onto to more than one device

3. Disadvantages

   • cost
     • expensive
   • problems
     • hard to set up
     • not always easy to fix
     • could get a virus
     • easy to hack
   • risk
     • virus
     • cable damage

4. Topology

   • bus topology
     • advantages
       • cheep to install
     • dissadvantages
       • high chance of collison
       • high chance of catastrophic failure
       • network gets slower as it gets bigger
     • consists of a single cable that runs through the networks and all devices attach to this single cable
   • star topology
     • advantages
       • low chance of failure
       • no collisions ( fast )
     • disadvantages
       • expensive
       • depends on switch
     • all computers are connected to a central switch, This switch directs the traffic to the appropriate computer
   • ring topology
     • advantages
       • cheap to install
       • no collisions (fast)
     • dissadvantages
       • high chances of catastrophic failure
       • difficult to expand
     • computers are connected to each other in a ring and that ring only goes around in one direction

5. IP addresses

   • largest possible IP address is 255.255.255.255
   • smallest possible IP address is 0.0.0.0
   • a unique value assigned to every computer on a network, used to identify it
   • total of 4228250625 IP addresses in the world
   • the internet is a huge network with more divesses than its possible to assign a unique IP address to

6. Internet

   • the, internet is a mesh of computers
   • if one computer is distroyed otheras can still work because of the mesh topoploy
   • tim berners lea invented the internet
   • data is split into small chuncks called packets so that large peces of data can be transfered
   • it is impossible to break the internet
   • there are multipul diffrent routes between any two nodes