- A
trivy
Why wrong: Trivy scans for vulnerabilities, but does not primarily generate SBOMs (though it can list packages).
- B
kubesec
Why wrong: kubesec is for static analysis of Kubernetes manifests.
- C
checkov
Why wrong: Checkov scans infrastructure as code.
- D
syft
Syft generates SBOMs from container images.
Question 16 of 997
Syft: Generate SBOM from Container Images
This CKS practice question tests your understanding of supply chain security. 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 tool can be used to generate an SBOM (Software Bill of Materials) for a container image?
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
✓
syft
Syft is a CLI tool specifically designed to generate a Software Bill of Materials (SBOM) from container images and filesystems. It uses static analysis to catalog packages (e.g., APK, DEB, RPM, Python, Java) and outputs the SBOM in formats like SPDX or CycloneDX, which are industry standards for supply chain transparency. This makes it the correct choice for generating an SBOM from a container image in a CKS context.
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
Why it's wrong here
Trivy scans for vulnerabilities, but does not primarily generate SBOMs (though it can list packages).
- ✗
kubesec
Why it's wrong here
kubesec is for static analysis of Kubernetes manifests.
- ✗
checkov
Why it's wrong here
Checkov scans infrastructure as code.
- ✓
syft
Why this is correct
Syft generates SBOMs from container images.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CKS often tests the distinction between a dedicated SBOM generator (Syft) and a vulnerability scanner that can also produce SBOMs (Trivy), leading candidates to pick Trivy because they associate it with container security, but the question specifically asks for a tool 'to generate an SBOM', not to scan for vulnerabilities.
Detailed technical explanation
How to think about this question
Syft works by mounting the container image layers and parsing package managers' databases (e.g., /var/lib/dpkg/status for Debian, /lib/apk/db/installed for Alpine) to enumerate installed software. It supports multiple output formats including SPDX 2.3 and CycloneDX 1.5, which are critical for compliance with supply chain security frameworks like SLSA or the US Executive Order on Cybersecurity. A subtle behavior is that Syft can also analyze a filesystem directory directly, not just OCI images, making it versatile for offline or air-gapped environments.
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
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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: syft — Syft is a CLI tool specifically designed to generate a Software Bill of Materials (SBOM) from container images and filesystems. It uses static analysis to catalog packages (e.g., APK, DEB, RPM, Python, Java) and outputs the SBOM in formats like SPDX or CycloneDX, which are industry standards for supply chain transparency. This makes it the correct choice for generating an SBOM from a container image in a CKS context.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
4 more ways this is tested on CKS
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which tool is commonly used to generate a Software Bill of Materials (SBOM) for a container image?
easy- A.kubesec
- ✓ B.syft
- C.trivy
- D.cosign
Why B: Syft is a CLI tool purpose-built for generating Software Bill of Materials (SBOMs) from container images and filesystems. It uses static analysis to extract package metadata (e.g., dpkg, RPM, APK, Python, Node.js) and outputs the SBOM in formats like CycloneDX or SPDX, which are the industry standards for supply chain transparency.
Variation 2. Which tool is specifically designed to generate a Software Bill of Materials (SBOM) for container images?
easy- A.Checkov
- B.Cosign
- ✓ C.Syft
- D.Trivy
Why C: Syft is an open-source CLI tool developed by Anchore specifically for generating Software Bill of Materials (SBOMs) from container images and filesystems. It uses static analysis to catalog packages, libraries, and dependencies in formats such as CycloneDX and SPDX, making it the correct choice for this purpose.
Variation 3. Which tool can generate an SBOM (Software Bill of Materials) from a container image?
easy- ✓ A.syft
- B.kubesec
- C.trivy
- D.checkov
Why A: Syft is a CLI tool specifically designed to generate a Software Bill of Materials (SBOM) from container images and filesystems. It uses static analysis to extract package metadata from package managers (e.g., dpkg, RPM, APK) and produces SBOMs in formats like SPDX and CycloneDX, directly addressing the requirement for supply chain transparency.
Variation 4. Which tool is used to generate an SBOM (Software Bill of Materials) for a container image?
easy- A.Clair
- B.Kubesec
- C.Trivy
- ✓ D.Syft
Why D: Syft is a CLI tool specifically designed to generate a Software Bill of Materials (SBOM) from container images and filesystems. It uses a pluggable cataloger system to extract package metadata (e.g., dpkg, RPM, APK, Python, Java JARs) and outputs the SBOM in formats like CycloneDX or SPDX, which are the standard formats for supply chain transparency.
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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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