CPENT Network And Perimeter Exploitation Practice Question
A penetration tester is conducting reconnaissance against a web application firewall (WAF) protected perimeter. Which TWO methods can help identify whether a WAF is present in front of a web server? (Choose TWO)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Running the wafw00f enumeration tool
Sending anomalous HTTP requests or triggering typical attack signatures (like WAF-testing tools such as wafw00f) and observing unique block pages or headers are standard WAF detection techniques.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Reviewing local ARP cache tables
Why it's wrong here
ARP caches show local layer 2 MAC-to-IP mappings.
- ✓
Running the wafw00f enumeration tool
Why this is correct
Wafw00f is designed specifically to identify and fingerprint web application firewalls.
- ✗
Performing a standard ICMP ping sweep
Why it's wrong here
ICMP pings check for host liveness at layer 3, not WAF presence.
- ✗
Running a DNS zone transfer (AXFR) query
Why it's wrong here
DNS zone transfers target DNS servers, not web application firewalls.
- ✓
Triggering known bad request patterns (e.g., malformed payloads) to observe block responses
Why this is correct
Sending suspicious signatures often prompts the WAF to return a distinctive block page or error code.
About these practice questions
This CPENT question is part of Courseiva's 276-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This CPENT practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CPENT exam.