What is the role of encryption in securing data at rest? MCQ with Answer and Explanation

What is the role of encryption in securing data at rest?
A. To increase data speed
B. To delete data
C. To compress data
D. To protect data stored on devices from unauthorized access
Answer: Option D
Solution (By JKSSB Mock Tests)
Encryption of data at rest protects stored data, such as files on a hard drive, by making it unreadable to unauthorized users.

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Practice More Cyber Security Questions

Question #1
What is 'cybercrime'?
A. A crime that is always violent
B. A crime that involves physical theft
C. A criminal activity that is committed using computers or the internet
D. A crime that involves only financial fraud

Correct Answer: Option C


Explanation:
Cybercrime refers to any illegal activity that involves a computer, network, or the internet, including identity theft, hacking, and online fraud.

This question belongs to: Computer Cyber Security
Question #2
Which of the following is a common technique used in social engineering?
A. Baiting
B. Using antivirus
C. Encrypting data
D. Installing a firewall

Correct Answer: Option A


Explanation:
Baiting is a social engineering technique that lures victims with a promise of a reward, such as a free download, to trick them into installing malware or revealing information.

This question belongs to: Computer Cyber Security
Question #3
What type of hacker identifies security vulnerabilities in systems without permission, but instead of exploiting them, publicly posts the flaws online to force the vendor to patch them?
A. Black Hat Hacker
B. Grey Hat Hacker
C. White Hat Hacker
D. Script Kiddie

Correct Answer: Option B


Explanation:
Grey hat hackers compromise security perimeters without prior authorization, but generally lack malicious intent, aiming instead to expose vulnerabilities or force technical remediation.

This question belongs to: Computer Cyber Security