Year 8 Revision

Year 8 Revision

1. Networks

   • LAN/WAN/WPAN
     • WAN=wide area network
     • LAN=local area network
     • WPAN=wireless persanal area network
   • Connection Types
     • Ethernet
       • ?
     • WiFi
     • GPRS
       • ?
     • Bluetooth
       • to help two devices connect together
       • for example a phone connecting to a speaker
   • Network Security (FAPE)
     • fire wall
       • this stops hackers from seeing your files
     • passwords
       • hint: a password should have an alpha and numeric mix and should be at least 8 characters long

2. Hardware

   • CPU
     • central processing unit
       • the brain of the computer
       • sends commands to the computer screen
   • Secondary Storage
     • optical
       • this will come in a CD or DVD shape or form to make it easier to travel with
     • solid state
       • this has no moving parts in it
         • this will make it harder for you to break it
     • magnetic
       • this is really cheap and cost effective
   • RAM
     • random access memory