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CV0-004 Rolling deployment Practice Question
A cloud architect is evaluating deployment strategies for a microservices application that requires high availability and minimal downtime during updates. Which TWO deployment methods should the architect consider?
⚠ Common exam trap
A common trap is confusing deployment strategies (like rolling and blue/green) with testing strategies (like canary), where canary is primarily a testing method that also reduces risk but may not provide the same level of high availability as rolling or blue/green.
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
✓
Rolling deployment
Both rolling deployment (B) and blue/green deployment (E) are suitable for microservices applications requiring high availability and minimal downtime during updates. Rolling deployment updates instances incrementally, replacing old versions with new ones in batches while keeping the application available. Blue/green deployment maintains two identical environments (blue and green), allowing traffic to be switched instantly from the old version to the new version, thus minimizing downtime. These strategies align with the requirements for high availability and minimal downtime.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Immutable deployment
Why it's wrong here
Incorrect: Immutable replaces entire instances but still requires careful orchestration; blue/green and rolling are more standard HA deployments.
- ✓
Rolling deployment
Why this is correct
Correct: Rolling updates a subset of instances at a time, maintaining availability.
- ✗
In-place deployment
Why it's wrong here
Incorrect: In-place updates cause downtime because they replace existing instances directly.
- ✗
Canary deployment
Why it's wrong here
Incorrect: Canary is for testing a small feature subset, not a primary HA strategy.
- ✓
Blue/green deployment
Why this is correct
Correct: Blue/green runs two identical environments and switches traffic, enabling instant rollback.
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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.