Revision

Revision

1. Lans

   • A lan is a local area network, it lets you connect to wifi in a small area.
   • It is secure since you need a password to get into it.
   • A lan you have is your wifi modem
   • Bluetooth
     • Lets you connect devices together through radio waves
     • Connect 8 devices
     • An example is a phone and a speaker
     • 12 meters
   • An advantage to a lan is that it lets you connect to wifi
   • A disadvantage is if any one has the password they get into it
   • Another advantage is that it doesnt cost much
   • Ethaernet cable
     • Connects you directly to the wifi
     • Physical security
     • Connect 2 devices together
     • Connects straight from the modem to what device is plugged in

2. Wans

   • A wan is a wide area network.
   • The biggest wan is wifi
   • A bunch of lans are a wan.
     • They use wan big areas to use.
   • An advantage to wans are that they can be incredibly big
   • They cost alot of money though

3. Wpan

   • a wpan is a wireless area network
     • You can use it anywhere wireless
   • It is 4g
   • advantage to a wpan is that you can use it anywhere personaly
   • a disadvantage is that you need a contract to have it.
   • Gprs
     • 4g lets you have internet anywhere
     • Portable

4. Fire wall

   • A fire wall protects your pc from hackers.
   • IT decides what f=data packets are shared and received.
     • Worm virus
       • It keeps duplicating to run our pc down as much as it can
       • will end up destroying your pc

5. Anti virus

   • Scans your computer for any virus and then kills it.

6. malware is a device that is used to destroy the computer

7. Peripherals

   • Keyboard
     • speaker
       • Mouse
         • printer
           • monitor
   • A peripheral is a device that connects to your pc

8. Hard ware

   • Pc
   • Hard drive
   • Ram card
   • Nic

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