KCNA Container Orchestration Practice Question
Which TWO statements about container images are correct? (Choose two.)
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
✓
Container images can be stored in a registry like Docker Hub
Container images are built in layers and can be stored in registries. They are not immutable once built (they can be overwritten), and they include only the application and dependencies, not a full OS kernel.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Container images include a full operating system kernel
Why it's wrong here
Images share the host kernel.
- ✓
Container images can be stored in a registry like Docker Hub
Why this is correct
Registries store and distribute images.
- ✓
Container images are built from a series of layers
Why this is correct
Images are composed of layers, often from a Dockerfile.
- ✗
Container images are immutable once built
Why it's wrong here
Tags can be overwritten; images can be replaced.
- ✗
Container images can only be built on Linux
Why it's wrong here
Images can be built on Windows and macOS too.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA practice question is part of Courseiva's free CNCF 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 KCNA exam.