Utility Software LST

What is the primary function of utility software in a computer system?

• To enhance the graphical user interface

• To help maintain and optimise system performance

• To provide internet connectivity

• To develop software applications

Answer explanation

Utility software is designed to help maintain and optimise system performance, ensuring that the computer runs efficiently. This includes tasks like disk management, system diagnostics, and file management.

How does encryption software protect data?

• By compressing files to reduce size

• By disguising file contents so only authorised users can understand them

• By defragmenting files for faster access

• By backing up files to a secure location

Answer explanation

Encryption software protects data by disguising file contents, ensuring that only authorized users can understand them. This prevents unauthorized access and keeps sensitive information secure.

Which of the following is NOT considered utility software?

• Encryption software

• Spreadsheet software

• Defragmentation software

• Data compression software

Answer explanation

Spreadsheet software is primarily used for data organization and analysis, while utility software, like encryption, defragmentation, and data compression, focuses on system maintenance and optimization.

What is the main purpose of defragmentation software?

• To encrypt files for security

• To rearrange fragmented files so they run contiguously

• To compress files to save space

• To delete temporary files

Answer explanation

The main purpose of defragmentation software is to rearrange fragmented files on a disk so they run contiguously. This improves access speed and overall system performance, unlike encryption, compression, or deletion of files.

Why is data compression beneficial for file storage and transmission?

• It increases the file size for better quality

• It makes files easier to transmit across a network by reducing their size

• It encrypts files for added security

• It defragments files for faster access

Answer explanation

Data compression reduces file size, making it easier and faster to transmit files across networks. This is crucial for efficient data transfer, especially in bandwidth-limited environments.

What is a backup in the context of data management?

• A temporary file used for quick access

• A copy of data made to prevent loss

• A compressed version of a file

• An encrypted version of a file

Answer explanation

A backup is specifically defined as a copy of data made to prevent loss. This ensures that in case of data corruption or accidental deletion, the original data can be restored from the backup.

What distinguishes a full backup from an incremental backup?

• A full backup copies all files, while an incremental backup copies only new or changed files

• A full backup compresses files, while an incremental backup encrypts them

• A full backup deletes files, while an incremental backup rearranges them

• A full backup is faster than an incremental backup

Answer explanation

A full backup copies all files in their entirety, ensuring complete data recovery. In contrast, an incremental backup only copies files that have been newly created or modified since the last backup, making it more efficient in terms of storage and time.

Which type of backup is typically performed daily after an initial full backup?

• Full backup

• Incremental backup

• Differential backup

• Encrypted backup

Answer explanation

An incremental backup is performed daily after an initial full backup, capturing only the data that has changed since the last backup. This makes it efficient in terms of storage and time compared to full or differential backups.

What is a significant disadvantage of performing a full backup?

• It requires a lot of storage space and time

• It is less secure than other methods

• It cannot be scheduled automatically

• It does not copy all files

Answer explanation

A significant disadvantage of performing a full backup is that it requires a lot of storage space and time. This can be a burden, especially for large data sets, making it less efficient compared to incremental backups.

Why does encryption software use a complex algorithm?

• To compress files for storage efficiency

• To scramble content so it appears as gibberish to unauthorised users

• To delete files securely

• To defragment files for faster access

Answer explanation

Encryption software uses complex algorithms to scramble content, making it unreadable or appear as gibberish to unauthorized users. This ensures that sensitive information remains secure and protected from prying eyes.