CKS Minimize Microservice Vulnerabilities Practice Question
This CKS practice question tests your understanding of minimize microservice vulnerabilities. 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 recommended practices for securing container images and runtime?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set runAsNonRoot to true in securityContext
Running as non-root and using a read-only root filesystem are key security best practices. Scanning for vulnerabilities is also important but not listed as an option here. The correct answers are B and D.
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.
✓
Set runAsNonRoot to true in securityContext
Why this is correct
Ensures the container runs as a non-root user.
Related concept
Read the scenario before looking for a memorised answer.
✗
Run containers as root inside the container for easier management
Why it's wrong here
Running as root increases security risk.
✓
Set readOnlyRootFilesystem to true in securityContext
Why this is correct
Prevents writes to the root filesystem, reducing attack surface.
Related concept
Read the scenario before looking for a memorised answer.
✗
Mount the docker socket inside the container for debugging
Why it's wrong here
Mounting the docker socket gives the container host-level access and is dangerous.
✗
Use the latest tag for all images
Why it's wrong here
Using latest is not recommended; it can lead to inconsistent versions and security issues.
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 CKS 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 CKS question in full detail.
Identify which CKS 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.
Minimize Microservice Vulnerabilities — This question tests Minimize Microservice Vulnerabilities — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set runAsNonRoot to true in securityContext — Running as non-root and using a read-only root filesystem are key security best practices. Scanning for vulnerabilities is also important but not listed as an option here. The correct answers are B and D.
What should I do if I get this CKS question wrong?
Identify which CKS 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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