Computing Revision

Computing Revision

1. Networks

   • WPANs
     • WPAN stands for Wireless Personal Area Network
     • A WPAN allows us to pair devices togather over a short range
       • Examples: a speaker connected to a phone or a smartwatch connected to a smart phone
     • you can connect to a WPAN using Bluetooth
   • WANs
     • WAN stands for Wide Area Network
     • A WAN is when networks are connected over a large geographical area
       • Examples: The internet
     • you can connect to a WAN through your telephone connection, mobile data or cable/satellite
   • LANs
     • LAN stands for Local Area Netwok
     • A LAN is when devices are connected over small geographical areas
       • Examples: at school or at home
     • Typical Hardware used to create a LAN
       • Network Interface Card
       • Switch
       • Erthnet Cable
       • Wifi Extender
       • Peripherals
       • Router

2. Connection Types

   • Bluetooth
   • GPRS
   • Ethernet
   • WiFi

3. Network threats and security

   • Encryptions
     • -WiFi connections should also be encrypted to stop unauthorised users from accessing you network-
     • -Websites which require you to send personal imformation should be encrypted-
     • -You need a key to decrypt the data packets so that they can be read-
     • -scrambles data packets using a cipher so that they cannot be read by unauthorised users-
   • Antivirus
   • Firewall
   • Phishing
   • Password
     • -needs to have at lest 8 characters -
     • -should include UPPERCASE, lowercase, numbers and symbols (E.G.!*&%$)-
     • -stop unauthorised users for accessing your account or changing/deleting any documents you may have-