What is the purpose of a digital signature? MCQ with Answer and Explanation

What is the purpose of a digital signature?
A. To verify the authenticity and integrity of a message
B. To encrypt a message
C. To compress a message
D. To speed up message delivery
Answer: Option A
Solution (By JKSSB Mock Tests)
A digital signature provides authentication and integrity verification, ensuring that a message or document comes from the claimed sender and has not been altered.

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Practice More Cyber Security Questions

Question #1
What type of attack targets a web application by injecting malicious SQL statements into input forms, allowing the attacker to manipulate the underlying backend database directly?
A. SQL Injection (SQLi)
B. Buffer Overflow Attack
C. Denial of Service (DoS)
D. Cross-Site Scripting (XSS)

Correct Answer: Option A


Explanation:
SQL injection occurs when unvalidated user input is passed directly to a database query engine, enabling threat actors to view, alter, or delete database tables illegally.

This question belongs to: Computer Cyber Security
Question #2
Which of the following is a common method to secure data in transit?
A. Using SSL/TLS encryption
B. Using a firewall
C. Using antivirus software
D. Using strong passwords

Correct Answer: Option A


Explanation:
SSL/TLS encryption secures data as it travels across networks, protecting it from interception and tampering.

This question belongs to: Computer Cyber Security
Question #3
Which of the following is an example of a physical security measure in cybersecurity?
A. Implementing a firewall
B. Using biometric access controls to a data center
C. Installing antivirus software
D. Using encryption

Correct Answer: Option B


Explanation:
Biometric access controls, such as fingerprint or iris scanners, are physical security measures that restrict physical access to sensitive areas like data centers.

This question belongs to: Computer Cyber Security