Year 8 reision

Year 8 reision

1. Hardware

   • RAM
   • Secondary storage
   • CPU
     • Fetches, decodes and executes data and/or instructions.
     • The number of independent processors in the CPU which run the fetch decode execute cycle simultaneously.
     • The number of fetch decode execute cycles a CPU can perform per second. This is measured in hertz (Hz).

2. Networks

   • connection types
     • GPRS
       • Better range, so is more likely to be able to watch the video when on the move.
       • Lower data transfer speed, therefore video might buffer when streaming
     • WIFI
       • Cost effective in comparison to GPRS.
       • Wifi may not be in range / limited range / not accessible, so may not be able to bigger tasks such as streaming video
     • Bluetooth
       • Quick to send data from one device to another
     • Ethernet
       • High data transfer speed
         • Cannot be used for portable devices such as tablets.
   • Networks security(FAPE)
     • encryption
     • password
     • antvirus
     • fiewall
   • LAN/WAN/WPAN