unit 1 and 2 revision

unit 1 and 2 revision

1. network

   • WPAN
     • stands for wireless personal area network
     • a wpan allows us to pair devices over a short range
   • LAN
     • stands for = local area network
     • when devices are connected over a small geographic arera
     • you can connect to lan using wifi or ethenet

2. connection types

   • wifi
     • wifi is good for connecting portable devices to a lan
     • ethernet
       • it has faster transfer speeds then wifi and has a ramge off 100 meters
     • gprs
       • it can be used on the move and good for mobile devices
     • bluetooth
       • up to 7 devices can be paired at once

3. network threats and security

   • firewall
   • controls which programs can send or receive data packets from your computer or network.

4. passwords

   • at least 8 letters
   • add number letters and symbols
   • make sure u remember it