KCSA Kubernetes Cluster Component Security Practice Question
When configuring Role-Based Access Control (RBAC), which Kubernetes object grants permissions across the entire cluster rather than within a single namespace?
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
✓
ClusterRole
A ClusterRole defines permissions across the entire cluster, and a ClusterRoleBinding applies them cluster-wide.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ServiceAccount
Why it's wrong here
ServiceAccounts are namespace-scoped identities used by pods.
- ✓
ClusterRole
Why this is correct
ClusterRole is cluster-scoped and can be bound cluster-wide using a ClusterRoleBinding.
- ✗
Role
Why it's wrong here
Roles are strictly namespace-scoped.
- ✗
PodSecurityPolicy
Why it's wrong here
PodSecurityPolicies were deprecated/removed cluster-scoped objects, superseded by Pod Security Standards.
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
One of 320 original KCSA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. 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.