CAS-004 Security Architecture Practice Question
A security analyst is reviewing a Kubernetes cluster and wants to ensure that only authorized users can create or modify pods. Which Kubernetes object should be configured to enforce this?
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
✓
RBAC
RBAC (Role-Based Access Control) in Kubernetes controls access to API resources, including pod creation, based on roles and 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.
- ✗
Admission controllers
Why it's wrong here
Admission controllers intercept requests but do not define user permissions.
- ✗
Pod security policies
Why it's wrong here
PSP controls security contexts, not user authorization.
- ✓
RBAC
Why this is correct
RBAC grants or denies API access to users and service accounts.
- ✗
Network policies
Why it's wrong here
Network policies control pod-to-pod traffic, not API access.
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 |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.