- A
Set the deployment configuration to AllAtOnce to speed up the process.
Why wrong: AllAtOnce does not handle rollback; it deploys to all instances simultaneously.
- B
Configure a lifecycle hook to terminate failing instances.
Why wrong: Lifecycle hooks can pause instances but do not automatically roll back deployments.
- C
Use a blue/green deployment strategy instead of in-place.
Why wrong: Blue/green can help but does not automatically roll back; rollback still needs to be configured.
- D
Enable automatic rollback in the deployment group configuration.
Automatic rollback will revert to the last known good revision when health checks fail.
Question 791 of 1,616
CodeDeploy Automatic Rollback for Health Check Failures
This DVA-C02 practice question tests your understanding of development with aws services. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 developer is using AWS CodeDeploy to deploy a new version of an application to an Auto Scaling group. The deployment fails because the new instances do not pass the health check. The developer wants to automatically roll back the deployment if the health check fails. Which CodeDeploy setting should be configured?
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
✓
Enable automatic rollback in the deployment group configuration.
Option D is correct because AWS CodeDeploy provides a built-in automatic rollback feature that can be configured at the deployment group level. When enabled, if a deployment fails (e.g., due to health check failures), CodeDeploy automatically reverts to the last known successful deployment, ensuring minimal downtime and manual intervention.
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.
- ✗
Set the deployment configuration to AllAtOnce to speed up the process.
Why it's wrong here
AllAtOnce does not handle rollback; it deploys to all instances simultaneously.
- ✗
Configure a lifecycle hook to terminate failing instances.
Why it's wrong here
Lifecycle hooks can pause instances but do not automatically roll back deployments.
- ✗
Use a blue/green deployment strategy instead of in-place.
Why it's wrong here
Blue/green can help but does not automatically roll back; rollback still needs to be configured.
- ✓
Enable automatic rollback in the deployment group configuration.
Why this is correct
Automatic rollback will revert to the last known good revision when health checks fail.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse deployment strategies (like blue/green or in-place) with rollback mechanisms, not realizing that rollback is a separate configuration setting that must be explicitly enabled regardless of the deployment strategy.
Detailed technical explanation
How to think about this question
Automatic rollback in CodeDeploy works by monitoring the deployment's overall status and the health of instances via Amazon CloudWatch alarms or the deployment group's health check configuration. When a rollback is triggered, CodeDeploy redeploys the last successful revision, and the rollback itself is treated as a new deployment with its own deployment ID and logs. This is critical in production environments where manual rollback could take minutes, while automatic rollback happens within seconds of failure detection.
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.
TExam Day Tips
- 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.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable automatic rollback in the deployment group configuration. — Option D is correct because AWS CodeDeploy provides a built-in automatic rollback feature that can be configured at the deployment group level. When enabled, if a deployment fails (e.g., due to health check failures), CodeDeploy automatically reverts to the last known successful deployment, ensuring minimal downtime and manual intervention.
What should I do if I get this DVA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 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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