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CAS-004 Practice Question: Adopting a DevOps model and wants to integrate…
A company is adopting a DevOps model and wants to integrate security into CI/CD pipelines. Which of the following is the MOST effective approach?
⚠ Common exam trap
The CAS-004 exam often tests the misconception that post-deployment testing (Option B) is sufficient for security, but the trap here is that candidates overlook the fundamental DevSecOps principle of shifting security left, where automated fail-fast scanning in the pipeline is the only approach that prevents vulnerable code from ever reaching production.
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
✓
Automated security scanning in the pipeline with fail-fast
Automated security scanning in the pipeline with fail-fast is the most effective approach because it integrates security checks (e.g., SAST, DAST, dependency scanning) directly into the CI/CD workflow, enabling immediate detection and blocking of vulnerabilities before they reach production. This aligns with DevSecOps principles by shifting security left, reducing remediation costs, and ensuring that insecure code fails the build automatically, preventing deployment of vulnerable artifacts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Annual vulnerability scans
Why it's wrong here
Annual scans are too infrequent for continuous delivery.
- ✗
Post-deployment security testing
Why it's wrong here
Post-deployment testing catches issues after they are in production.
- ✗
Manual security reviews before each release
Why it's wrong here
Manual reviews are slow and do not scale in DevOps.
- ✓
Automated security scanning in the pipeline with fail-fast
Why this is correct
Automation with fail-fast provides immediate feedback and prevents vulnerable code from progressing.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA 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 CAS-005 exam.