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ISC2 CC Practice Question: A company implements role-based access control…
A company implements role-based access control (RBAC) to ensure users have only the permissions necessary for their job roles. This is an example of:
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
✓
Least privilege
RBAC enforces least privilege by granting users only the permissions necessary for their roles. Option A is Least privilege, which limits permissions to the minimum required. Option B (Defense in depth) involves multiple layers of security. Option C (Separation of duties) divides critical tasks among different individuals. Option D (Need-to-know) restricts access to data based on necessity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Least privilege
Why this is correct
RBAC enforces least privilege by granting only required permissions.
- ✗
Defense in depth
Why it's wrong here
Defense in depth involves multiple security layers.
- ✗
Separation of duties
Why it's wrong here
Separation of duties divides conflicting tasks.
- ✗
Need-to-know
Why it's wrong here
Need-to-know restricts access to specific data.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Defense in depth
Defense in depth is a cybersecurity strategy that uses multiple layers of security controls to protect information and systems, so if one layer fails, another layer is already in place to stop the attack.
Key term
Role
A role is a named set of permissions that can be assigned to users or groups to control access to resources in an IT environment.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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