networks

networks

1. topologys

   • ring topology
     • disadvantages
       • dificult to expand
       • high chance of failure
     • advantages
       • cheap
       • no collisions
   • star topology
     • advantages
       • low chance of failure
       • no collisions
     • disadvantages
       • depends on the switch/hub
       • expensive
   • bus topology
     • advantages
       • cheap to install
     • disadvantages
       • one single wire so if one computer goes down all the others do
       • high chance of chatastrophic failiure
       • slows down as more computers are added

2. advantages

   • you can share platforms, files and printers.
   • the computers are conected so you can sign in on all of them

3. types of networks

   • WAN
     • wide area network
     • Good for large geographical areas
     • e.g. PSN network
   • LAN
     • local area network
     • Good for houses and schools
     • E.g. WiFi routers supply LAN

4. IP Adresses

   • an IP Adress is a unique value assigned to every computer on a network
   • Unique addresses are assigned to businesses and houses.
     • these houses run their own mini network inside their house

5. Disadvantages

   • networks can run out of IP Adresses
   • people could access your account if they get your password

6. a group of computers connected together so they can communicate

7. Internet

   • packets
     • chunks of data are added into packets
   • Routing
     • routing is finding the cheapest route in mesh topology
   • mesh topology
     • instead of using a ring, star or bus topology you can use a mesh topology. there are many routes in a mesh topology and all these routes have a price