This KCNA practice question tests your understanding of container orchestration. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which two of the following are characteristics of container images built using OCI standards? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
They are portable across different container runtimes
OCI images are composed of layers (read-only) and are built from a Dockerfile. They are lightweight and portable across different runtimes. They do not include a guest OS (unlike VMs), and they are not tied to a specific runtime.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
They are portable across different container runtimes
Why this is correct
OCI standards ensure portability.
Related concept
Read the scenario before looking for a memorised answer.
✓
They are composed of layers that can be cached and reused
Why this is correct
OCI images use layered filesystems for efficiency.
Related concept
Read the scenario before looking for a memorised answer.
✗
They include a full guest operating system
Why it's wrong here
Containers share the host OS kernel; they do not include a guest OS.
✗
They can only be run by Docker
Why it's wrong here
OCI images are runtime-agnostic; any OCI-compliant runtime can run them.
✗
They require a hypervisor to run
Why it's wrong here
Containers do not use hypervisors.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the KCNA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this KCNA question in full detail.
Identify which KCNA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Container Orchestration — This question tests Container Orchestration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: They are portable across different container runtimes — OCI images are composed of layers (read-only) and are built from a Dockerfile. They are lightweight and portable across different runtimes. They do not include a guest OS (unlike VMs), and they are not tied to a specific runtime.
What should I do if I get this KCNA question wrong?
Identify which KCNA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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