Software 2

Question 1

What is a utility application?

Answer 1

This is a program that comes with the computer system, It performs specific tasks while the computer is operational. For example it will back up files, check for virus’ or run a compression program.

Question 2

Examples of calculations carried out by utility applications?

Answer 2

• Disk defragmenting
• Task scheduling
• Backup
• Restoring data

Question 3

What is disk defragmenting?

Answer 3

Files on a computer are stored on the hard disk. As more and more files are saved to the hard disk sections of files get stored away from each other, which causes the computer performance to slow down. The computer slows down because the hard disk has to find all the data from each file before it can be opened. When the “defrag” program is used the computer puts all the pieces of each file together again, therefore speeding up the computer.

Question 4

What is task scheduling?

Answer 4

This is when the CPU will allocate time for each task or program that the computer has running.

This ensures that many programs can seemingly run at the same time and that maximum usage is made of the CPU time.

You can use the task scheduler to ask the computer to perform specific tasks at times you choose for example setting it to run your antivirus software.

Question 5

What is backup?

Answer 5

This involves making copies of file or programs in case the original one becomes corrupted.

Backups should be made at regular intervals to ensure you always have an up-to-date copy of your files.

A backup of software should be stored separately from the computer to protect against dangers such as fire.

Question 6

Describe the types of backup - Full Backup

Answer 6

This copie all files to provide a complete record of the data

Question 7

Describe the types of backup - differential backup

Answer 7

This copies files that have changed since the last backup

Question 8

Describe the types of backup - incremental backup

Answer 8

This copies only files that have changed since the last backup. This could be a full backup or a previous incremental backup.

Question 9

Describe the types of backup - journal file

Answer 9

This provides a record of operations since the previous backup

Question 10

Describe the types of backup - hard copy

Answer 10

As a last resort a copy store on paper secured safety

Question 11

Describe restoring data -

Answer 11

This is used when files or programs become corrupt. The backup system files are copied back onto the system. To return the system to the state before it failed involves restoring the latest journal file or any transactions files.

Question 12

What is antivirus software?

Answer 12

Antivirus software is used to detect and quarantine or remove malicious software from the computer system.

Question 13

How does antivirus software work?

Answer 13

Antivirus monitors are stored in the hard drive; they continually monitor the system for the presence of a virus. If one is detected the file is prevented from running and a warning message is sent to the user. The user can then decide whether to quarantine or remove the software.

Question 14

What is disinfecting?

Answer 14

Disinfection is the removal of any detected viruses.

Question 15

What is quarantining?

Answer 15

Quarantine is isolating any files that are suspected of containing a virus.

Question 16

Why are regular updates important?

Answer 16

Regular updates of antivirus software are essential to ensure that the computer system is completely protected against any threats. New viruses are created everyday so it is important that the antivirus software can detect these as soon as possible and take any necessary action.