KCSA Compliance And Security Frameworks Practice Question
A security architect is designing role-based access control (RBAC) to comply with NIST access control principles of least privilege. Which THREE best practices should be followed when creating Roles and ClusterRoles? (Choose THREE)
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
✓
Scrutinize and restrict the use of ClusterRoleBindings to cluster-wide resources
Least privilege requires avoiding wildcards, scoping permissions tightly, and auditing bindings.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Scrutinize and restrict the use of ClusterRoleBindings to cluster-wide resources
Why this is correct
ClusterRoleBindings grant cluster-wide access and should be tightly controlled.
- ✓
Avoid using wildcards (*) in API groups, resources, and verbs where possible
Why this is correct
Wildcards grant overly broad access, violating least privilege.
- ✗
Allow all users to read Kubernetes Secrets by default
Why it's wrong here
Secrets contain sensitive data and access must be strictly restricted.
- ✗
Grant cluster-admin permissions to all application service accounts for ease of deployment
Why it's wrong here
Granting cluster-admin broadly is a severe security violation.
- ✓
Regularly audit RBAC permissions and bindings
Why this is correct
Periodic auditing ensures permissions remain aligned with current needs.
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 |
About these practice questions
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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 CNCF / Linux Foundation exam blueprint
This KCSA practice question is part of Courseiva's free CNCF / Linux Foundation 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 KCSA exam.