What is the role of encryption in cybersecurity? MCQ with Answer and Explanation

What is the role of encryption in cybersecurity?
A. To convert data into a secure format that is unreadable without a key
B. To compress data
C. To speed up data processing
D. To delete data
Answer: Option A
Solution (By JKSSB Mock Tests)
Encryption converts readable data (plaintext) into an unreadable format (ciphertext) using an algorithm and key, ensuring that only authorized parties can access the information.

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Practice More Cyber Security Questions

Question #1
Which component of a secure operating system architecture logs every successful and failed user authentication attempt to provide an audit trail for forensic review?
A. Firewall Filter Sheet
B. Quarantine Vault
C. Heuristic Monitor
D. Security Event Log / Audit Log

Correct Answer: Option D


Explanation:
Security event logs provide an immutable chronological record of access histories, system errors, and authentication attempts to assist forensic investigations.

This question belongs to: Computer Cyber Security
Question #2
What is the purpose of a security incident response plan?
A. To increase system performance
B. To manage employee schedules
C. To prevent all security incidents
D. To provide a structured approach for handling security incidents

Correct Answer: Option D


Explanation:
An incident response plan outlines the steps to take when a security incident occurs, ensuring a coordinated and effective response to minimize damage.

This question belongs to: Computer Cyber Security
Question #3
What is the function of a security token in multi-factor authentication?
A. To encrypt data
B. To provide a physical key for access
C. To store user passwords
D. To generate a one-time password for authentication

Correct Answer: Option D


Explanation:
A security token, such as a hardware token or a mobile app, generates a one-time password (OTP) that is used as a second factor in authentication, enhancing security.

This question belongs to: Computer Cyber Security