mediumMultiple ChoiceObjective-mapped
ISC2 CC Practice Question: Deploys firewalls at the network perimeter,…
An organization deploys firewalls at the network perimeter, antivirus on endpoints, and encryption for data at rest. This approach best exemplifies which security principle?
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
✓
Defense in depth
Correct: D - Defense in depth. Defense in depth uses multiple, overlapping security controls such as firewalls, antivirus, and encryption to protect assets. Option A is wrong because separation of duties divides critical tasks among multiple people to prevent fraud. Option B is wrong because diversity of defense, while related, is not the primary principle demonstrated; the key is the layered approach. Option C is wrong because least privilege restricts access rights to the minimum necessary.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Separation of duties
Why it's wrong here
Separation of duties divides responsibilities among multiple individuals to prevent fraud or error, but this scenario uses multiple controls, not task division.
- ✗
Diversity of defense
Why it's wrong here
Diversity of defense involves using different types of controls, but the question emphasizes multiple overlapping layers, which is defense in depth.
- ✗
Least privilege
Why it's wrong here
Least privilege limits access to the minimum needed, but the scenario is about layers of defense, not access restrictions.
- ✓
Defense in depth
Why this is correct
Correct. Defense in depth uses multiple, overlapping security controls (firewall, antivirus, encryption) to protect assets, providing resilience if one layer fails.
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Least privilege
Least privilege is a security principle that means giving users, systems, or programs only the minimum permissions they need to do their job and nothing more.
Key term
Separation of duties
Separation of duties is a security principle that splits critical tasks and privileges among multiple people to prevent fraud, errors, and abuse of power.
About these practice questions
One of 976 original CC 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 by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 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 CC exam.