Utility System Software (lesson4)

Question 1

What is the purpose of utility software?

Answer 1

• Utility programs are designed to do just one or two tasks.
• They interact withthe computer’s hardware e.g., the disk drive.
• They areinbuilt into the operating system

Question 2

What are the 3 main utilities?

Answer 2

Encryption​
Data compression​
defragmentation​

Question 3

What is meant by defragmentation?

Answer 3

The process of physically organising the mass storage device into the smallest number of fragments.

Question 4

What is meant by data compression?

Answer 4

When a device uses fewer bits to transmit the same amount of data.

Question 5

What is meant by encryption?

Answer 5

• Encryption uses an algorithm to scramble plain text into cyphertext.
• The text can only be decrypted and made readable again with a key.