Which of the following is a type of attack that attempts to make a service unavailable by overwhelming it with traffic? MCQ with Answer and Explanation

Which of the following is a type of attack that attempts to make a service unavailable by overwhelming it with traffic?
A. Denial-of-Service (DoS)
B. Man-in-the-middle
C. SQL injection
D. Phishing
Answer: Option A
Solution (By JKSSB Mock Tests)
A Denial-of-Service (DoS) attack aims to make a service or network resource unavailable by flooding it with traffic or requests.

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Practice More Cyber Security Questions

Question #1
Which malicious software hides inside a seemingly legitimate utility or software application, only to execute its malicious payload once installed by an unsuspecting user?
A. Ransomware
B. Trojan Horse
C. Spyware
D. Computer Worm

Correct Answer: Option B


Explanation:
A Trojan Horse masquerades as safe, benign software to trick users into running it, but contains hidden malicious code designed to compromise system security.

This question belongs to: Computer Cyber Security
Question #2
Which software utility uses cryptographic hashing to verify that a downloaded application patch has not been tampered with or modified by an intermediary threat actor?
A. Firewall Packet Filter
B. Integrity Checker / Hash Verifier
C. File Compression Engine
D. Sandbox Controller

Correct Answer: Option B


Explanation:
Integrity checkers calculate cryptographic hashes (like SHA-256) of files, comparing them to known vendor benchmarks to verify the file hasn't been modified.

This question belongs to: Computer Cyber Security
Question #3
What is the technical security term given to a software flaw or hardware vulnerability that is actively exploited by threat actors before the software vendor has developed a remediation patch?
A. Zero-Day Vulnerability
B. Buffer Overflow
C. Backdoor Entry
D. Logic Bypass flaw

Correct Answer: Option A


Explanation:
A zero-day exploit targets unknown or unpatched software vulnerabilities, giving defense teams zero days of preparation to guard against the threat.

This question belongs to: Computer Cyber Security