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Automatic updates allow the user to keep their software up to date without having to manually check for updates.

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A virus checker is a computer program used to prevent and remove malware. It is used  to protect the computer from harmful programs by detecting viruses before they can get access to your computer. If a virus is detected trying to get through the firewall, the software will give an alert and ask how you want to deal with the program. Virus checker is important for system software as viruses can interfere with the operating system. This could lead to the computer not being able to function which is why anti virus is necessary in a computer.

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Success Criteria :

1) Create a post that you can use for a revision guide.
i) The post should contain a suitable image.
ii) Explain why the relevant utility is used.
iii) Detail the impact this has on systems software,
iiii) You could provide useful links containing further revision.

Jakub: Disk defragmenter
Riley: Automatic backup
Dawid: Virus checker
Patrick: Automatic updating
Kieran: Compression Software

You will then present this to each other!

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Over time, as files are added and deleted, the locations of files saved on the Hard Drive are scattered. A disk defragmenter rearranges the bits of data into structured blocks. This can slightly speed up the rate at which files are loaded, as the arm of the hard drive doesn't need to move very far to reach all of the saved data. A solid state drive would not benefit from defragmentation done to it as it has no moving parts.

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Compression Utility software can reduce the size of files to make transporting/ sending those files easier and faster
Zipped or compressed files can be sent much faster over the internet as the size of the file is reduced by removing unnecessary details (higher/lower frequencies in .mp3 files)
Advantages:
Takes up less disk space, reduces file size
The data can be sent much faster over the internet
Disadvantages:
Anti-virus software may not be able to scan compressed files, leaving the system open to viruses (Trojans, spyware, ransomware)

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The automatic process of backing up data, which refers to the copying into an archive file of computer data that is already in secondary storage, so that it may be used to restore the original after a data loss event.
In the event of loss of data then you can load the previous set of data that was stored and retrieve that data