The answer is blue/green deployment and rolling deployment. Blue/green deployment maintains high availability by running two identical environments—one active (blue) and one idle (green)—so traffic can be instantly switched to the updated green environment with near-zero downtime, while rolling deployment updates instances in small batches, keeping the rest of the application available throughout the process. On the CompTIA Cloud+ CV0-004 exam, this question tests your understanding of deployment strategies for high availability during updates, often appearing in scenario-based items where you must choose methods that minimize service disruption. A common trap is selecting canary deployment alone, which is more for testing than full availability, or confusing blue/green with a simple A/B test. Remember the memory tip: “Blue/green flips the switch; rolling swaps the bricks”—blue/green gives instant cutover, while rolling replaces instances piece by piece to keep the service up.
CV0-004 Deployment Practice Question
This CV0-004 practice question tests your understanding of deployment. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
Why wrong: Incorrect: Immutable replaces entire instances but still requires careful orchestration; blue/green and rolling are more standard HA deployments.
B
Rolling deployment
Correct: Rolling updates a subset of instances at a time, maintaining availability.
C
In-place deployment
Why wrong: Incorrect: In-place updates cause downtime because they replace existing instances directly.
D
Canary deployment
Why wrong: Incorrect: Canary is for testing a small feature subset, not a primary HA strategy.
E
Blue/green deployment
Correct: Blue/green runs two identical environments and switches traffic, enabling instant rollback.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Rolling deployment
Blue/green deployment allows instant switchover with minimal downtime. Rolling deployment updates instances gradually, maintaining availability.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
✗
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.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which CV0-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Rolling deployment — Blue/green deployment allows instant switchover with minimal downtime. Rolling deployment updates instances gradually, maintaining availability.
What should I do if I get this CV0-004 question wrong?
Identify which CV0-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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