What is the purpose of a CAPTCHA on a website? MCQ with Answer and Explanation

What is the purpose of a CAPTCHA on a website?
A. To display advertisements
B. To encrypt user data
C. To speed up page loading
D. To distinguish between human users and automated bots
Answer: Option D
Solution (By JKSSB Mock Tests)
CAPTCHA is a test used to determine whether a user is human, helping to prevent automated bots from performing malicious actions like spamming or brute-force attacks.

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Practice More Cyber Security Questions

Question #1
Which software module isolates files flagged by antivirus software, locking them away from the filesystem to prevent them from executing code or infecting other applications?
A. Heuristic Analyzer
B. Quarantine
C. Sandbox Space
D. Firewall Rule Sheet

Correct Answer: Option B


Explanation:
Antivirus quarantine utilities isolate suspected malware files in a secure directory structure, keeping them from interacting with the main OS.

This question belongs to: Computer Cyber Security
Question #2
A piece of code that self-replicates by attaching its binary payload to an executable file on a USB flash drive, running whenever the drive is plugged into a new system, is a:
A. Macro Script Module
B. Boot Sector / File Infector Virus
C. Logic Bomb Tracker
D. Pure Network Daemon

Correct Answer: Option B


Explanation:
File infectors and boot sector viruses attach to portable files and storage partitions, copying themselves to new host machines via shared media.

This question belongs to: Computer Cyber Security
Question #3
Which of the following is a type of malware that hides in the operating system and is difficult to detect?
A. Adware
B. Ransomware
C. Spyware
D. Rootkit

Correct Answer: Option D


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