KCSA Kubernetes Threat Model Practice Question
Which of the following is a key component of the Kubernetes threat model concerning the compromise of node kubelets via insecure configuration?
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
✓
Leaving the Kubelet read-only port (10255) enabled and accessible
Exposing the Kubelet read-only port (10255) allows unauthenticated retrieval of pod specifications, container logs, and environment variables without any credentials.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Leaving the Kubelet read-only port (10255) enabled and accessible
Why this is correct
Port 10255 provides unauthenticated read access to node data, exposing sensitive environment variables and pod metadata.
- ✗
Enforcing Pod Security Admission in restricted mode
Why it's wrong here
Restricted mode enhances security posture by blocking insecure pod configurations.
- ✗
Using secure HTTPS client certificates for API server communication
Why it's wrong here
Using client certificates is a secure practice, not an insecure configuration threat vector.
- ✗
Enabling RBAC authorization mode across the control plane
Why it's wrong here
RBAC is a security best practice designed to mitigate authorization risks.
About these practice questions
This KCSA question is part of Courseiva's 319-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.