DVA-C02 Development with AWS Services Practice Question
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 deploying an application using AWS CodeDeploy with an in-place deployment configuration. The application runs on an EC2 instance behind an Application Load Balancer. The deployment fails because the health check fails after the new version is installed. What should the developer do to prevent the deployment from failing due to health checks?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a longer health check grace period in the CodeDeploy application specification.
The correct answer is D. Configuring a longer health check grace period allows the application to start and stabilize before the load balancer checks its health. Option A is wrong because deregistering the instance during deployment is not a standard practice and may cause traffic loss. Option B is wrong because a blue/green deployment is a different strategy, not a fix for in-place deployment. Option C is wrong because increasing the interval alone does not provide a grace period.
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.
✗
Deregister the instance from the target group before deployment and register it after.
Why it's wrong here
This would cause traffic interruption and is not a recommended practice for in-place deployment.
✗
Switch to a blue/green deployment strategy.
Why it's wrong here
Blue/green deployment avoids in-place issues but does not fix the health check problem for in-place.
✓
Configure a longer health check grace period in the CodeDeploy application specification.
Why this is correct
The grace period allows the application to initialize before health checks are performed, preventing premature failure.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase the health check interval on the load balancer.
Why it's wrong here
Adjusting the interval alone may not give enough time for the application to start.
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.
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: Configure a longer health check grace period in the CodeDeploy application specification. — The correct answer is D. Configuring a longer health check grace period allows the application to start and stabilize before the load balancer checks its health. Option A is wrong because deregistering the instance during deployment is not a standard practice and may cause traffic loss. Option B is wrong because a blue/green deployment is a different strategy, not a fix for in-place deployment. Option C is wrong because increasing the interval alone does not provide a grace period.
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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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.
Question Discussion
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