1.5.2

Question 1

What is utility software? (2)

Answer 1

Software that performs a specific task (1) to aid the computer in running (1)

Question 2

What is encryption software? (3)

Answer 2

Software that disguises data (1) using an algorithm (1) so only authorised users can understand it (1)

Question 3

What is the purpose of defragmentation software? (3)

Answer 3

Files on the hard disk are moved (1) so files are stored together (1) so fewer disk accesses are needed (1)

Question 4

Why might a computer run faster after defragmentation software has run? (3)

Answer 4

It takes less time to access a file because the data is stored contiguously (together in order) (1) so the HDD doesn’t need to move as far to read the next piece of data (1) because it will be in the next memory location (1)

Question 5

Give three examples of utility programs (3)

Answer 5

Backup (1) Encryption (1) Compression (1) Firewall (1) anti-virus (1)

Question 6

How does compression software reduce file size? (4)

Answer 6

It uses an algorithm (1) to remove repeated or unnecessary data (1) It could be lossy or lossless (1) lossy removes data permanently. Lossless means original file will be restored (1)

Question 7

List 3 things you can do with a file management utility (3)

Answer 7

Place files in folders (1) rename folders (1) delete files (1) create folders. (1) etc.