Network

Network

1. advantages

   • share files,so the same files are available whichever computer you use.
   • share resources such as printers and internet connection.
   • share logins,so the same username and password can be used on every computer on the network.

2. disadvantages

   • increased risk of problems such as viruses can affect every computer on the network.
   • cost networks are expensive to set up.

3. LAN

   • local area network
   • A network contained in a single geographical location or organisation

4. WAN

   • Wide area network
     • A network that spans a large geographical area, or multiple organisations Often consists of multiple LANs networked together

5. bus topology

   • Advantages
     • cheap
   • disadvantages
     • high chance of collisions and easy to crash
     • more computer increases the chance of collisions

6. star topology

   • advantages
     • fast and easy to add a new computer
     • low chance of catastrophic failure
   • disadvantages
     • expensive and the switch will take down the network

7. ring topology

   • advantages
     • cheap and low chance of collision
   • disadvantages
     • high chance of catastrophic failure
     • hard to add new computers

8. ip addresses

   • ip address is a unique value assigned to every computer on a network.it is used to identify messages which is howa computer knows whether or not to keep the messages.

9. mesh

   • The internet is a giant mesh of computers.There are multiple different routes between two nodes.it is impossible to break the internet,since another route can always be found.
   • While a mesh network like the Internet is very reliable, it has a big downside when compared to other topologies like a star