ISC2 CC Access Controls Concepts Practice Question
An organization wants to implement a physical access control that requires two different credentials to enter a high-security server room. Which concept does this best represent?
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
Defense in depth involves multiple overlapping controls, such as requiring both a badge and a biometric scan.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Defense in depth
Why this is correct
Correct. Using multiple layers of security (e.g., badge + biometric) is defense in depth.
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Separation of duties
Why it's wrong here
Separation of duties divides tasks among individuals, not access methods.
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Need-to-know
Why it's wrong here
Need-to-know restricts data access, not physical entry methods.
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Least privilege
Why it's wrong here
Least privilege limits permissions, not the number of authentication factors.
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
Access control
Access control is the security practice of determining who or what is allowed to view, use, or enter a resource, and under what conditions.
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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.