KCSA Kubernetes Cluster Component Security Practice Question

An administrator needs to restrict kubelets so they can only modify resources associated with their own node (such as their own Node object and Pods bound to them). Which authorization mode must be enabled alongside RBAC?

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

✓

Node

The Node authorization mode is a special-purpose authorization mode that specifically authorizes kubelet API requests.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
Node
Why this is correct
Enabling the Node authorizer ensures kubelets operate under the principle of least privilege regarding node resources.
✗
ABAC
Why it's wrong here
Attribute-Based Access Control is a static policy format, not the dynamic node-isolation authorizer.
✗
AlwaysDeny
Why it's wrong here
AlwaysDeny rejects all requests, breaking cluster operations.
✗
PodSecurity
Why it's wrong here
PodSecurity is an admission controller, not an authorization mode.

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 →

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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

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