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200-901 Practice Question: Which THREE security measures should be…
Which THREE security measures should be implemented in a CI/CD pipeline to protect against supply chain attacks? (Choose three.)
⚠ Common exam trap
Cisco often tests the distinction between artifact signing (which protects authenticity after build) and dependency integrity verification (which protects against supply chain attacks during the build), causing candidates to mistakenly select signing as a supply chain defense.
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
✓
Pin dependency versions to specific hashes.
Pinning dependency versions to specific hashes (e.g., using `integrity` attributes in npm’s package-lock.json or `sha256` checksums in pip’s requirements.txt) ensures that only the exact, verified content is downloaded. This prevents an attacker from substituting a malicious version of a dependency, even if the version tag remains the same, by validating the cryptographic hash of the artifact against a known good value.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable verbose logging for all build steps to detect anomalies.
Why it's wrong here
Verbose logging may expose sensitive information and does not directly prevent supply chain attacks.
- ✓
Pin dependency versions to specific hashes.
Why this is correct
Version pinning prevents accidental introduction of malicious updates.
- ✗
Sign all build artifacts with a GPG key.
Why it's wrong here
Signing verifies the integrity of the artifact itself but does not protect against compromised dependencies.
- ✓
Verify checksums of downloaded dependencies.
Why this is correct
Checksum verification ensures that dependencies have not been tampered with.
- ✓
Use a private registry for container images with vulnerability scanning.
Why this is correct
Private registries control which images are used and scanning identifies known vulnerabilities.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.