KCSA Platform Security Practice Question
What is the primary function of a container runtime interface (CRI) security boundary in Kubernetes?
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
✓
To separate the management of container lifecycles from the kubelet while maintaining isolation
The CRI acts as the interface between the kubelet and the container runtime (such as containerd or CRI-O), ensuring that container isolation and execution are managed securely.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To provision persistent block storage volumes
Why it's wrong here
Storage provisioning is handled by Container Storage Interface (CSI) plugins.
- ✗
To manage DNS lookups across cluster namespaces
Why it's wrong here
DNS resolution is handled by CoreDNS.
- ✓
To separate the management of container lifecycles from the kubelet while maintaining isolation
Why this is correct
The CRI standardizes the communication between kubelet and container runtimes, ensuring secure management of container creation and execution.
- ✗
To encrypt all secrets stored within Kubernetes Secrets objects
Why it's wrong here
Secret encryption at rest is managed by the Kubernetes API server configuration and encryption providers.
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.