- A
Trivy (trivy fs)
trivy fs scans the filesystem for vulnerabilities, ideal for scanning a build context.
- B
Kubesec
Why wrong: Kubesec is for static analysis of Kubernetes manifests, not for scanning filesystems.
- C
Notary
Why wrong: Notary is a tool for managing image trust, not for vulnerability scanning.
- D
Cosign
Why wrong: Cosign is used for signing and verifying images, not for scanning.
Question 507 of 997
Trivy fs: Scanning the Build Context for Vulnerabilities
This CKS practice question tests your understanding of supply chain security. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A security engineer wants to integrate image scanning into a CI/CD pipeline. They are using a tool that can scan the filesystem of the build context before building the image. Which tool is best suited for this purpose?
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
✓
Trivy (trivy fs)
Trivy's `fs` subcommand scans the filesystem of a build context (directory) for vulnerabilities and misconfigurations before the container image is built. This allows the security engineer to catch issues early in the CI/CD pipeline, such as vulnerable application dependencies or insecure configurations in Dockerfiles, without needing a built image. Trivy is purpose-built for this filesystem scanning use case, making it the correct choice.
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.
- ✓
Trivy (trivy fs)
Why this is correct
trivy fs scans the filesystem for vulnerabilities, ideal for scanning a build context.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Kubesec
Why it's wrong here
Kubesec is for static analysis of Kubernetes manifests, not for scanning filesystems.
- ✗
Notary
Why it's wrong here
Notary is a tool for managing image trust, not for vulnerability scanning.
- ✗
Cosign
Why it's wrong here
Cosign is used for signing and verifying images, not for scanning.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The CKS exam often tests the distinction between tools that scan build context filesystems (like Trivy fs) versus tools that scan built container images (like Trivy image or Grype), causing candidates to confuse the pipeline stage where each tool applies.
Detailed technical explanation
How to think about this question
Trivy `fs` works by parsing the filesystem tree, identifying package managers (e.g., pip, npm, apt) and their lock files, then cross-referencing installed package versions against vulnerability databases (e.g., NVD, GHSA). It also supports custom policies via Rego for misconfiguration detection. In a CI/CD pipeline, this scan can be run before `docker build` to fail the build early if critical vulnerabilities exist in dependencies, reducing the attack surface before the image is even created.
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.
TExam Day Tips
- 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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Supply Chain Security — study guide chapter
Learn the concepts, then practise the questions
- →
Supply Chain Security practice questions
Targeted practice on this topic area only
- →
All CKS questions
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- →
Certified Kubernetes Security Specialist CKS study guide
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CKS practice test guide
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FAQ
Questions learners often ask
What does this CKS question test?
Supply Chain Security — This question tests Supply Chain Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Trivy (trivy fs) — Trivy's `fs` subcommand scans the filesystem of a build context (directory) for vulnerabilities and misconfigurations before the container image is built. This allows the security engineer to catch issues early in the CI/CD pipeline, such as vulnerable application dependencies or insecure configurations in Dockerfiles, without needing a built image. Trivy is purpose-built for this filesystem scanning use case, making it the correct choice.
What should I do if I get this CKS question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This CKS 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 CKS exam.
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