Which utility software is used to protect a computer from viruses? MCQ with Answer and Explanation

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Which utility software is used to protect a computer from viruses?

A. Firewall

B. Antivirus

C. Backup software

D. Disk Cleanup

Answer: Option B

Solution (By JKSSB Mock Tests)

Antivirus software detects, prevents, and removes malicious software.

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Question #1

Which of the following is not a utility software?

A. Backup software

B. Disk compression tool

C. Database management system

D. Antivirus

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Correct Answer: Option C

Explanation:
DBMS is application software, while backup, antivirus, and disk tools are utilities.

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Question #2

What is the function of a code obfuscator?

A. To make source code difficult to understand

B. To compile code faster

C. To link libraries

D. To manage memory

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Correct Answer: Option A

Explanation:
Obfuscation protects intellectual property by making code unreadable.

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Question #3

Software that is universally useful across a broad cross-section of unrelated industries, such as a word processor or web browser, is known as:

A. Custom Bespoke Code

B. Vertical Market Software

C. Horizontal Market Software

D. System Firmware Core

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Correct Answer: Option C

Explanation:
Horizontal market software provides broad utility across diverse industries (e.g., any office or factory can use a spreadsheet or word document editor).

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