Utility Software

What are they?
Disk defragmentation, Backup and Restore, Compression, Encryption
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What is the definition of utility software?
Utility software helps to manage, maintain and control computer resources.
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What is disk defragmentation used for?
Disk Defragmenter is a utility in Microsoft Windows designed to increase access speed by rearranging files stored on a disk to occupy storage.
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How does disk defragmentation work?
it rearranges the fragments and restores them in fewer fragments or in the whole file.
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What is full backup/ restore?
All of the other backups run off of the full backup because it stores all of the files and folders. Frequent full backups results in it being faster.
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What is an incremental backup/ restore?
An incremental backup is a type of backup that only copies files that have changed since the previous backup. For example, if a full backup was performed on Monday, Tuesday's incremental will back up all changed files since Monday's backup.
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What is lossy compression and how does it work?
Lossy compression works very differently. These programs simply eliminate "unnecessary" bits of information, tailoring the file so that it is smaller. This type of compression is used a lot for reducing the file size of bitmap pictures.
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What is lossless compression and how does it work?
Compression can be lossy or lossless. Lossless compression means that as the file size is compressed, the picture quality remains the same - it does not get worse. This would be used if you were sending an e-mail.
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What is encryption and what is it used for?
Encryption refers to any process used to make sensitive data more secure and less likely to be intercepted by those unauthorized to view it. There are several modern types of encryption used to protect sensitive electronic data, such as emails.
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Other cards in this set

Card 2

Front

What is the definition of utility software?

Back

Utility software helps to manage, maintain and control computer resources.

Card 3

Front

What is disk defragmentation used for?

Back

Preview of the front of card 3

Card 4

Front

How does disk defragmentation work?

Back

Preview of the front of card 4

Card 5

Front

What is full backup/ restore?

Back

Preview of the front of card 5
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