CAS-004 Security Architecture Practice Question
An organization is migrating to an immutable infrastructure model for its containerized applications. Which practice is essential to ensure the integrity of the immutable infrastructure?
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
✓
Image scanning and signing in the CI/CD pipeline
Immutable infrastructure means that components are replaced rather than modified. Image scanning ensures that only secure, approved images are deployed, preventing tampered or vulnerable images from running.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Regular patching of running containers
Why it's wrong here
Immutable infrastructure discourages patching running instances; instead, new images are built.
- ✓
Image scanning and signing in the CI/CD pipeline
Why this is correct
Scanning for vulnerabilities and signing images ensures only trusted images are deployed.
- ✗
Runtime security monitoring with seccomp
Why it's wrong here
Runtime security is important but not unique to immutability; the key is ensuring the image itself is secure before deployment.
- ✗
Use of configuration management tools like Ansible
Why it's wrong here
Configuration management often modifies running systems, which contradicts immutability.
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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.