- A
Update the ECS task definition for the green service to a working version and wait for the deployment to complete.
Why wrong: The deployment is stuck; updating the green service may not automatically resume the deployment.
- B
Manually update the ECS service for the blue environment to increase the desired count.
Why wrong: This does not address the stuck deployment; the blue service is already serving traffic.
- C
Stop the deployment in CodeDeploy and re-point the ALB listener to the blue target group.
Stopping the deployment and rerouting traffic ensures blue continues to serve traffic without interruption.
- D
Roll back the deployment to the previous version using the CodeDeploy console.
Why wrong: Rollback may not be available because the deployment is still 'InProgress' and the green fleet is unhealthy.
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 company deploys a critical application on Amazon ECS with Fargate using a blue/green deployment strategy with AWS CodeDeploy. The deployment group has two target groups, one for blue and one for green. The Application Load Balancer (ALB) is configured with a listener that forwards traffic to the blue target group initially. A recent deployment to the green environment failed, and the green service is in a steady state with zero healthy tasks. The developer needs to ensure that the blue service continues to serve traffic without interruption. The developer checks the CodeDeploy console and sees that the deployment is stuck in the 'InProgress' state with a status of 'Green fleet is not healthy.' What should the developer do to restore the deployment to a healthy state?
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
Stop the deployment in CodeDeploy and re-point the ALB listener to the blue target group.
Option B is correct because stopping the deployment and rerouting traffic to the blue target group ensures the blue service continues to serve traffic. Option A is wrong because manually updating the blue service does not address the stuck deployment. Option C is wrong because updating the green service may not fix the deployment. Option D is wrong because rolling back may not be available if the deployment is stuck.
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.
- ✗
Update the ECS task definition for the green service to a working version and wait for the deployment to complete.
Why it's wrong here
The deployment is stuck; updating the green service may not automatically resume the deployment.
- ✗
Manually update the ECS service for the blue environment to increase the desired count.
Why it's wrong here
This does not address the stuck deployment; the blue service is already serving traffic.
- ✓
Stop the deployment in CodeDeploy and re-point the ALB listener to the blue target group.
Why this is correct
Stopping the deployment and rerouting traffic ensures blue continues to serve traffic without interruption.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Roll back the deployment to the previous version using the CodeDeploy console.
Why it's wrong here
Rollback may not be available because the deployment is still 'InProgress' and the green fleet is unhealthy.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which DVA-C02 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.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
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: Stop the deployment in CodeDeploy and re-point the ALB listener to the blue target group. — Option B is correct because stopping the deployment and rerouting traffic to the blue target group ensures the blue service continues to serve traffic. Option A is wrong because manually updating the blue service does not address the stuck deployment. Option C is wrong because updating the green service may not fix the deployment. Option D is wrong because rolling back may not be available if the deployment is stuck.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 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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Last reviewed: Jun 20, 2026
This DVA-C02 practice question is part of Courseiva's free Amazon Web Services 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 DVA-C02 exam.
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