networks

networks

1. advantages

   • they share the same files on every computer
   • they all share the same resourses
   • they all share the same logins so you can log on to anycomputer in the network

2. disadvantages

   • they are expensive to install
     • if there is an error that can effect all the computers
   • there can be viruses spred all around thenetwork.

3. types of networks

   • lan - local area network - a network in a local orginisation (catmose)
     • IP Address
       • an IP Address is a unique value every computer on a network used to identify that computer
       • for instance messages sent to a computer are attached with an IP address so it knows whether not to keep the message or not.
   • wan - wide area network - a network that spans a large orginisation (google)

4. bus topology

   • advantages
     • cheep it install
   • disadvantages
     • high chance of catastrophic failure
     • lost of collision
     • slow down as more computers are added

5. ring topology

   • advantages
     • cheep to install
     • no collisions (fast)
   • disadvantages
     • high chance of catastrophic failure
     • difficult to expand

6. star topology

   • advantages
     • low chance of failure
     • no collisions (fast)
   • disadvantages
     • expensive
     • depends on switch