212-89 Web Application Incidents Practice Question
During a Cross-Site Scripting (XSS) incident, you notice the WAF is blocking legitimate user sessions. What is the most effective tuning step to prevent false positives while maintaining protection?
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
✓
Create a granular exclusion for the specific parameter triggering the alert
Creating a targeted exception for a specific URI or parameter prevents over-blocking while keeping the signature active for the rest of the application.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable the entire XSS protection rule set
Why it's wrong here
This exposes the application to the full range of XSS attacks.
- ✗
Implement a negative security model
Why it's wrong here
A negative security model is prone to bypasses and does not solve the false positive issue.
- ✓
Create a granular exclusion for the specific parameter triggering the alert
Why this is correct
Exclusions allow legitimate traffic through while maintaining the primary security posture.
- ✗
Switch the WAF from Blocking mode to Transparent mode
Why it's wrong here
Transparent mode stops all blocking, leaving the application vulnerable.
About these practice questions
This 212-89 question is part of Courseiva's 206-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 212-89 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 212-89 exam.