KCSA Kubernetes Security Fundamentals Practice Question
Which TWO of the following are valid Kubernetes RBAC rule subjects that can be bound to roles or cluster roles?
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
✓
User
Kubernetes RBAC supports three primary subjects: User, Group, and ServiceAccount.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Secret
Why it's wrong here
Secrets store sensitive data, not subjects.
- ✓
User
Why this is correct
Users represent human users authenticated to the cluster.
- ✗
Namespace
Why it's wrong here
Namespaces are objects, not subjects.
- ✓
ServiceAccount
Why this is correct
ServiceAccounts are standard RBAC subjects representing workloads.
- ✗
PersistentVolume
Why it's wrong here
PersistentVolumes are storage resources, not subjects.
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
Courseiva writes every KCSA question from scratch — 319 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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.