Which of the following is a type of DoS (Denial-of-Service) attack? MCQ with Answer and Explanation

Which of the following is a type of DoS (Denial-of-Service) attack?
A. Installing a Trojan
B. Phishing
C. SQL injection
D. Flooding a network with traffic to make it unavailable
Answer: Option D
Solution (By JKSSB Mock Tests)
A Denial-of-Service (DoS) attack aims to make a service or network unavailable by overwhelming it with a flood of traffic.

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Practice More Cyber Security Questions

Question #1
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. Pharming
B. Tailgating
C. Baiting
D. Pretexting

Correct Answer: Option B


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 #2
What type of attack occurs when an unauthorized user intercepts a wireless network session token, allowing them to impersonate a legitimate user without typing a password?
A. Session Hijacking / Cookie Stealing
B. Brute Force Guessing
C. SQL Injection Modality
D. IP Header Spoofing

Correct Answer: Option A


Explanation:
Session hijacking involves stealing active session IDs or web cookies to take over an authenticated user's active session web connection.

This question belongs to: Computer Cyber Security
Question #3
A type of targeted phishing scam designed to look like an urgent confirmation message from an executive's direct supervisor is classified as:
A. Vishing connection
B. Spear Phishing
C. Bulk Spamming
D. Pharming redirection

Correct Answer: Option B


Explanation:
Spear phishing targets specific groups or individuals within an enterprise, using familiar internal context to improve the likelihood of deception.

This question belongs to: Computer Cyber Security