networks

networks

1. advantages

   • you can log on to any computer in the school using the same username and password
   • your files are available on every computer you use, even if you created them on a different computer
   • you can print, use the internet, email and use the same software on any computer

2. disadvantages

   • it is expensive as extra hardware and wiring would be needed
   • if something went wrong, it would most likely affect every other computer
   • it would need specialized technical experts
   • viruses can spread through networks

3. types of Network

   • LAN:
     • Local Area Network
     • A Network that is located in a spesific area
   • WAN:
     • Wide Area Network
     • A network that spans a big geographical area or multiple organisations
     • it often consists more then 1 LANs working together

4. Topology

   • star
     • disadvantages
       • expensive
       • fast
     • all computers are connected to one central switch
     • advantages
       • it is high performing
       • very reliable
   • ring
     • computers connected in a ring
     • disadvantage
       • chance of failure
       • it is expensive
     • advantage
       • cheap to install
       • data can transfer between workstations at high speeds
   • bus
     • The Network consists of a SINGLE CABLE that runs through the Network
     • advantages
       • cheap to install ( only one wire needed )
     • disavantages
       • more computers mean more collisions, so the Network gets slower as it gets bigger
       • high chance of CATOSTRIFIC FAILURE