NETWORKS

NETWORKS

1. advantages

   • share files
     • so the files are available whichever computer you use
   • share rescourses
     • such as printers and internet connection
   • share login
     • username and password can be shared over vomputer

2. disadvantages

   • expensive
     • extra hardware and wiring needed
   • more room for error
     • if something goes wrong it can effect every computer
   • diffucult
     • requires expert

3. different types of networks

   • Local area of network
     • LAN
     • A network in a small area or single organisation
   • Wide area network
     • WAN
     • A network that spans a large area or multiple organasation

4. Network topology

   • bus topology
     • advantages
       • cheap to install
     • disadvantges
       • high chance of catastrophic failure
       • lots of collisions
       • slows down as more computers are added
   • ring topology
     • disadvantages
       • high chance of catastrophic failure
       • difficult to expand
     • advantages
       • cheap to install
       • no collisions
   • star topology
     • advantages
       • low chance of failure
       • no collisions
     • disavantages
       • expensive
       • depends on switch

5. IP address

   • An IP address is a unique value assigned to every computer on a network used to identify it.
   • messages on a network have an IP address attached which is how a computer knows weather or not to keep the message
   • The internet is a huge network with more devieces than its possible o assign a unique address to
   • unique addresses are assigned to bussiness and houses these houses and business run their own mini network inside with different IP addresses