212-89 First Response Practice Question
You have identified an active C2 beacon on a corporate server. You are instructed to implement 'Containment' via network segmentation. Which configuration change on a Cisco ASA firewall provides the most effective containment while still allowing for remote forensic forensic analysis?
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
✓
Apply an ACL to the ingress interface that permits traffic only from the IR forensic workstation IP.
Creating a restrictive ACL that allows only the IR team's management IP to access the compromised server while blocking all other traffic is the best practice for controlled containment.
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 interface in the server's OS.
Why it's wrong here
This is disruptive and may trigger anti-forensic scripts in the compromised OS.
- ✗
Change the server's default gateway to a null route.
Why it's wrong here
This stops all network communication, including necessary management access.
- ✓
Apply an ACL to the ingress interface that permits traffic only from the IR forensic workstation IP.
Why this is correct
This allows the responder to maintain access while stopping the C2 communication and lateral movement.
- ✗
Shut down the switch port connected to the server.
Why it's wrong here
This destroys the ability to perform remote live forensics.
Visual reference
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.