CCOA Cybersecurity Principles And Risk Practice Question
When designing a defense-in-depth strategy, which layer should be addressed first as the primary boundary between internal and external networks?
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
✓
Perimeter network (DMZ)
The perimeter network (DMZ) is the first line of defense that separates the internal network from untrusted public networks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Data encryption
Why it's wrong here
This is a final layer of data protection.
- ✗
Host-based security
Why it's wrong here
This is an internal defense layer.
- ✓
Perimeter network (DMZ)
Why this is correct
The DMZ acts as the initial buffer zone.
- ✗
Application layer
Why it's wrong here
This is an internal layer.
About these practice questions
One of 203 original CCOA 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 ISACA exam blueprint
This CCOA practice question is part of Courseiva's free ISACA 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 CCOA exam.