1.5.2 Utility Software

Question 1

State the three utilities of an Utility System.

Answer 1

Encryption
Defragmentation
Data Compression

Question 2

Purpose of Encryption.

Answer 2

Scrambles data into cyphertext which can only be decrypted using a key.
- data intercepted cannot be understood

Question 3

Purpose of Compression.

Answer 3

Reduces the file size to use less disc-space, allowing it to be accessed, sent and downloaded quicker.

Question 4

Purpose of Defragmentation.

Answer 4

Reorganises files on the hard-drive to make sure all fragmented files are together and collects free space
- reduces movement and speeds up file-access.
SSDs don’t need to be defragmented - no moving parts - actually reduces lifespan.