What is the purpose of a cryptographic hash function in cybersecurity? MCQ with Answer and Explanation

What is the purpose of a cryptographic hash function in cybersecurity?
A. To compress data
B. To create a fixed-size digital fingerprint of data for integrity verification
C. To encrypt data
D. To transmit data securely
Answer: Option B
Solution (By JKExamLibrary)
A cryptographic hash function produces a fixed-size hash value from input data, which can be used to verify the integrity of the data by detecting any changes.

This question belongs to: Computer Cyber Security

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Practice More Cyber Security Questions

Question #1 Report Error
What type of hacker explicitly operates inside strict legal guidelines, using their offensive computer expertise to locate system vulnerabilities via authorized penetration testing?
A. Black Hat Hacker
B. Grey Hat Hacker
C. White Hat Hacker / Ethical Hacker
D. Script Kiddie

Correct Answer: Option C


Explanation:
White hat hackers use their technical skills legally and ethically to assess security postures, disclose vulnerabilities responsibly, and fortify enterprise defenses.

This question belongs to: Computer Cyber Security
Question #2 Report Error
What social engineering tactic involves an attacker tailing an authorized corporate employee closely through an office entryway to slip inside without scanning security badges?
A. Pretexting
B. Baiting
C. Tailgating
D. Pharming

Correct Answer: Option C


Explanation:
Tailgating is a physical security breach where an unauthorized person enters a secured facility by following closely behind a legitimate credential holder.

This question belongs to: Computer Cyber Security
Question #3 Report Error
Which of the following is a type of malware that can record keystrokes?
A. Worm
B. Ransomware
C. Keylogger
D. Adware

Correct Answer: Option C


Explanation:
A keylogger is a type of malware that records every keystroke made on a device, capturing sensitive information like passwords and credit card numbers.

This question belongs to: Computer Cyber Security