CND Network Defense Management Practice Question
During network defense lifecycle management, a security team identifies an end-of-life operating system that no longer receives vendor security patches. Which mitigation strategy represents best practice when immediate replacement is impossible?
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
✓
Implementing strict network segmentation and firewall micro-perimeter isolation around the legacy host
When legacy systems cannot be replaced, compensating controls such as network micro-segmentation and strict firewall filtering must be applied.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Exposing the legacy host directly to the public internet for easier monitoring
Why it's wrong here
Direct internet exposure of unpatched systems invites immediate compromise.
- ✗
Disabling the system logging service to prevent disk space exhaustion
Why it's wrong here
Disabling logging blinds the security team to potential attacks.
- ✓
Implementing strict network segmentation and firewall micro-perimeter isolation around the legacy host
Why this is correct
Micro-segmentation restricts lateral movement to and from vulnerable legacy systems.
- ✗
Granting full local administrator privileges to all domain users
Why it's wrong here
Granting administrator access drastically increases security risk.
About these practice questions
One of 323 original CND practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.