CND Network Perimeter Protection Practice Question
An organization deploys an inline Intrusion Prevention System (IPS) that begins dropping legitimate business-critical transactions due to false positives caused by a custom application protocol. What is the most appropriate immediate action for the security team while maintaining perimeter visibility?
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
✓
Change the specific offending signature action from block/drop to alert (log-only) mode.
When an IPS signature generates false positives on legitimate traffic, the signature should be tuned or switched from blocking mode to alerting-only mode until updated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the firewall default gateway to the backup ISP.
Why it's wrong here
Changing ISPs does not resolve signature-based false positives.
- ✗
Disable the entire IPS inspection engine globally.
Why it's wrong here
Disabling the entire engine removes all perimeter protection.
- ✓
Change the specific offending signature action from block/drop to alert (log-only) mode.
Why this is correct
Switching to alert mode prevents dropped packets while still notifying administrators of the event.
- ✗
Bypass the IPS by moving it from inline mode to out-of-band monitoring mode.
Why it's wrong here
Moving to out-of-band mode prevents the IPS from blocking any attacks, reducing security.
About these practice questions
This CND question is part of Courseiva's 323-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 CND 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 CND exam.