- A
Test the validation script manually on a healthy instance to confirm it works as expected.
Manual testing helps isolate whether the script itself is faulty.
- B
Increase the deployment timeout in the CodeDeploy deployment group to allow more time for validation.
Why wrong: Timeout increase may mask the issue but does not resolve the root cause.
- C
Review the CodeDeploy agent logs on a failing instance to identify the specific error in the validation script.
Logs provide details on why the validation script failed.
- D
Verify that the AppSpec file includes the correct lifecycle event hooks (e.g., ValidateService).
The ValidateService hook runs validation scripts; if misconfigured, the deployment fails.
- E
Configure an Auto Scaling lifecycle hook to perform health checks before the instance is placed in service.
Why wrong: Lifecycle hooks are for custom actions during scale-out/scale-in, not for CodeDeploy validation.
Quick Answer
The answer is to verify the AppSpec file includes correct lifecycle event hooks like ValidateService, review CodeDeploy agent logs for script failures, and test the validation script manually on a healthy instance. These three actions directly address the root cause of unhealthy instances: the application validation scripts are failing, not the agent itself. The AppSpec’s ValidateService hook defines the health check that CodeDeploy runs after deployment; if it’s misconfigured or the script errors, instances are marked unhealthy even though the agent is running. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of CodeDeploy’s deployment lifecycle versus Auto Scaling lifecycle hooks—a common trap is confusing the two or assuming a timeout increase will fix script logic errors. Remember, the agent logs tell you what failed, the AppSpec tells you what should run, and manual testing isolates script bugs. Memory tip: “Hooks, logs, and manual runs—three fixes for unhealthy ones.”
SAP-C02 Continuous Improvement for Existing Solutions Practice Question
This SAP-C02 practice question tests your understanding of continuous improvement for existing solutions. 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 company is using AWS CodePipeline to automate deployments of a web application. The pipeline includes a build stage using AWS CodeBuild and a deploy stage using AWS CodeDeploy to an Auto Scaling group. Recently, deployments have been failing during the deploy stage with an error indicating that the target instances are not in a healthy state. The CodeDeploy agent logs show that the agent is running but the application validation scripts are failing. Which THREE actions should the solutions architect take to troubleshoot and resolve the issue?
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
Test the validation script manually on a healthy instance to confirm it works as expected.
Options A, C, and D are correct. Checking AppSpec hooks ensures the validation scripts are correctly defined. Reviewing CodeDeploy agent logs helps identify script failures. Testing the validation script manually on a healthy instance verifies its functionality. Option B is wrong because increasing the deployment timeout does not fix the script failure. Option E is wrong because CodeDeploy does not use Auto Scaling lifecycle hooks for instance health; it uses its own deployment lifecycle.
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.
- ✓
Test the validation script manually on a healthy instance to confirm it works as expected.
Why this is correct
Manual testing helps isolate whether the script itself is faulty.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Increase the deployment timeout in the CodeDeploy deployment group to allow more time for validation.
Why it's wrong here
Timeout increase may mask the issue but does not resolve the root cause.
- ✓
Review the CodeDeploy agent logs on a failing instance to identify the specific error in the validation script.
Why this is correct
Logs provide details on why the validation script failed.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Verify that the AppSpec file includes the correct lifecycle event hooks (e.g., ValidateService).
Why this is correct
The ValidateService hook runs validation scripts; if misconfigured, the deployment fails.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure an Auto Scaling lifecycle hook to perform health checks before the instance is placed in service.
Why it's wrong here
Lifecycle hooks are for custom actions during scale-out/scale-in, not for CodeDeploy validation.
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 SAP-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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Continuous Improvement for Existing Solutions — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Continuous Improvement for Existing Solutions — This question tests Continuous Improvement for Existing Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Test the validation script manually on a healthy instance to confirm it works as expected. — Options A, C, and D are correct. Checking AppSpec hooks ensures the validation scripts are correctly defined. Reviewing CodeDeploy agent logs helps identify script failures. Testing the validation script manually on a healthy instance verifies its functionality. Option B is wrong because increasing the deployment timeout does not fix the script failure. Option E is wrong because CodeDeploy does not use Auto Scaling lifecycle hooks for instance health; it uses its own deployment lifecycle.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-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
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