Systems Software - Utility Software

Which software reorganises your files in this way?

• Firewall
• Defragmenter

This is the scrambling of data so that no one else can understand it.
This stops hackers from reading sensitive information

• Encryption
• Compression
• Defragmentation
• Backup

Uses algorithms to reduce the size of files. Makes it quicker and easier to transmit files over networks.

• Encryption
• Compression
• Defragmentation
• Backup

Reduces size by permanently removing some of the data (sound / video / image files)

• LOSSY
• LOSSLESS

Reduces size without deleting any of the data

• LOSSY
• LOSSLESS

Images, Audio and Video uses this type of compression 

• LOSSY
• LOSSLESS

Text files and software uses this type of compression

• LOSSY
• LOSSLESS

Copying files to another medium (e.g. hard drive / tape drive / cloud storage)
This is used to restore data if there is a hard drive failure

• Encryption
• Compression
• Defragmentation
• Backup

Which one of the following is not a Utility Program?

• Disk Defragmentation Tool

• Disk Formatter

• Web Browser

• Anti-Virus Software

Lossy Compression is.....?

• Usually performed on text
• When some original data is lost and the original file cannot be re-created
• The original file can be re-created from the compressed file
• Turning the text into a format that only a reader with a key can decrypt it