CV0-004 Deployment Practice Question
A cloud engineer is deploying a web application to a Kubernetes cluster. The application requires zero downtime during updates, and the team wants to test new versions with a small percentage of users before full rollout. Which deployment strategy should the engineer use?
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
✓
Canary deployment
A canary deployment routes a small percentage of traffic to the new version, allowing monitoring and automatic rollback if issues arise, meeting the requirements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Rolling deployment
Why it's wrong here
Rolling deployment replaces pods gradually but sends all users to whichever version is live, so it cannot isolate a small user subset for testing. It is tempting because it delivers zero downtime, and it would be correct when only availability during updates matters, without canary traffic splitting.
- ✗
Blue/green deployment
Why it's wrong here
Blue/green switches all traffic between two full environments, so it cannot direct a small percentage of users to the new version for testing. It is tempting because it provides zero-downtime cutover and instant rollback, and it would be correct when full, atomic release switching is required.
- ✓
Canary deployment
Why this is correct
Canary deployment routes a small percentage of live traffic to the new version while the remainder continues to the stable release, then gradually shifts traffic. This satisfies both constraints: zero downtime during updates and validating new versions with a limited user subset before full rollout.
- ✗
Immutable deployment
Why it's wrong here
Immutable deployment replaces entire instances rather than splitting traffic, so no mechanism routes a small user percentage to the new version. It is tempting because it guarantees consistent, reproducible infrastructure, and it would be correct when rollback speed and configuration drift elimination matter more than gradual canary exposure.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 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 CV0-004 exam.