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 transmit data securely
C. To create a fixed-size digital fingerprint of data for integrity verification
D. To encrypt data
Answer: Option C
Solution (By JKSSB Mock Tests)
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.

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Practice More Cyber Security Questions

Question #1
What is 'SQL injection'?
A. A method to inject a virus into a system
B. A type of social engineering
C. A technique to insert malicious SQL code into a query to manipulate a database
D. A physical attack on a server

Correct Answer: Option C


Explanation:
SQL injection is a code injection technique that exploits vulnerabilities in an application's database layer, allowing attackers to execute malicious SQL statements.

This question belongs to: Computer Cyber Security
Question #2
What type of hacker is officially employed by companies to run authorized penetration tests, identifying security bugs so they can be patched before a breach occurs?
A. White Hat Hacker
B. Grey Hat Hacker
C. Script Kiddie
D. Black Hat Hacker

Correct Answer: Option A


Explanation:
White hat hackers act as ethical safety professionals, using defensive and authorized offensive technical tools to improve organizational security controls.

This question belongs to: Computer Cyber Security
Question #3
What is 'cyberspace'?
A. The virtual world of interconnected computer networks and digital communication
B. A type of antivirus software
C. A physical location where computers are stored
D. A physical network cable

Correct Answer: Option A


Explanation:
Cyberspace refers to the global domain of digital networks, communications, and information systems, a virtual environment where online interactions occur.

This question belongs to: Computer Cyber Security