OCR GCSE CS 1.7 MCQ2 System Software (J276)

Which one of the following is not a Utility Program?

• Disk Defragmentation Tool

• Disk Formatter

• Web Browser

• Anti-Virus Software

Utility programs are usually…..?

• Part of the Operating System 

• Bought on a disk from a store

• Only needed if you connect to the Internet

• Very expensive to buy

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.

Question 4: Lossless Compression is….?

• Usually performed on video files.

• 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.

A fragmented hard drive is one in which…..?

• Program instructions and data are spread across tracks and sectors on the hard disk drive.

• Programs and instructions are grouped together to occupy a continuous section of the hard disk drive.

• A hard disk drive that has been dropped and broken into lots of pieces.

• The hard disk drive is split into portions each representing a different logical drive.

To scramble data so that it is unreadable is a form of….?

• Compression

• Encryption

• Backing up

• Defragmentation

This method of backup takes longer to perform.

• Incremental

• Differential

• Full

• Fragmented

This method of backup is quicker to perform once an initial backup file is created.

• Incremental

• Differential

• Full

• Fragmented

This type of back-up is quicker to restore from?

• Incremental

• Differential

• Full

• Fragmented

This type of back-up is slowest to restore from?

• Incremental

• Differential

• Full

• Fragmented