CompTIA PenTest+ (PT0-002) — Question 78

A penetration tester attempted a DNS poisoning attack. After the attempt, no traffic was seen from the target machine. Which of the following MOST likely caused the attack to fail?

Answer options

• A. The injection was too slow.
• B. The DNS information was incorrect.
• C. The DNS cache was not refreshed.
• D. The client did not receive a trusted response.

Correct answer: D

Explanation

The correct answer is D because DNS poisoning relies on the client accepting a malicious response. If the client did not receive a trusted response, it would ignore any potentially poisoned DNS entries. The other options, while plausible issues, do not directly explain the absence of traffic from the target machine as effectively as the trust factor does.