What is the role of a digital signature in cybersecurity? MCQ with Answer and Explanation

What is the role of a digital signature in cybersecurity?
A. To speed up data transmission
B. To encrypt a message
C. To compress a file
D. To provide authentication and integrity of a digital message
Answer: Option D
Solution (By JKExamLibrary)
A digital signature is a mathematical scheme for verifying the authenticity and integrity of a digital message or document, ensuring it has not been altered.

This question belongs to: Computer Cyber Security

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Practice More Cyber Security Questions

Question #1 Report Error
What type of attack relies on social engineering to drop malicious flash drives in a company parking lot, hoping an employee will plug one into a corporate workstation out of curiosity?
A. Whaling Attack
B. Baiting
C. Smishing Attempt
D. Pharming Exploit

Correct Answer: Option B


Explanation:
Baiting uses the promise of an item or curiosity (like a misplaced USB drive with an intriguing label) to entice victims into compromising their own system security.

This question belongs to: Computer Cyber Security
Question #2 Report Error
Which of the following is a type of malware that hides in the operating system and is difficult to detect?
A. Spyware
B. Rootkit
C. Adware
D. Ransomware

Correct Answer: Option B


Explanation:
A rootkit is a type of malware that hides deep within the operating system, often at the kernel level, making it very difficult to detect and remove.

This question belongs to: Computer Cyber Security
Question #3 Report Error
What is the role of a certificate authority (CA) in cybersecurity?
A. To issue and manage digital certificates
B. To encrypt data
C. To provide backup services
D. To manage network traffic

Correct Answer: Option A


Explanation:
A Certificate Authority (CA) is a trusted entity that issues digital certificates, verifying the identity of entities and enabling secure communications.

This question belongs to: Computer Cyber Security