KCSA Kubernetes Cluster Component Security Practice Question
When configuring the Kubernetes API server authorization modes, which mode evaluates requests against Kubernetes RBAC policies?
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
The RBAC (Role-Based Access Control) authorization mode uses cluster roles and bindings to govern access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
RBAC
Why this is correct
RBAC is the standard authorization mode for defining fine-grained user and service account permissions.
- ✗
Webhook
Why it's wrong here
Webhook delegates authorization decisions to an external HTTP service.
- ✗
Node
Why it's wrong here
The Node authorizer specifically limits kubelets to read/write objects related to their node.
- ✗
AlwaysAllow
Why it's wrong here
AlwaysAllow permits all requests without validation.
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
This KCSA question is part of Courseiva's 320-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.