Computing

Computing

1. Software

   • The main features of a Operating systems
     • User interface
     • Multitasking
     • Sercurity
     • peripheral management
     • Managing the memory
     • File managment
   • Utility software
     • Anti-virus
       • It will check the contents of a file every time you open it
       • It will look for hidden viruses against its database
       • It will quarantine the virus so that it will not spread to any other files
     • Firewall
       • a firewall will check and compare the data against its own set of rules
       • If the rules do not match up with the data then it is blocked
       • A firewall stops intruders getting into the computer it acts like a doorway only certain things can get in and only certain things can get out
     • disk defragmentation
       • This feature is needed because on computer files sometime become fragmented which makes the computer slow as it has to go to different places on the computer to find parts of a file
       • The defragmentation will put the files back together which makes the computer faster as well as creating more space for bigger files
       • Sometimes a file gets so fragmented that it cant run at all
     • Automatic updates
       • automatic updates works by the searching the internet for updates for already installed software
       • To install the updates the software will ask you to turn off your computer to install the updates
       • This service is important as if any software on a computer glitches it will be patched straight away it also keeps software up to date so that it can work with newer software
   • Custom written VS off the shelf
     • Custom written
       • Suits your exact needs as you have designed it
       • If you don't like a feature you can change it
       • Can integrate with current software
       • Is more costly
       • It will take a long time to make
       • There wont be any tutorials online or reviews as its personal
     • Off the shelf
       • Cost effective
       • Can buy and download straight away
       • can check reviews

2. Networking