The answer is to view the stack events in the CloudFormation console. This is the correct first step because the initial failure message only names the resource that failed—like MyEC2Instance—but does not reveal the underlying cause, such as an API call failure, insufficient IAM permissions, or a resource limit. The stack events log provides the specific error details for each resource creation attempt, allowing you to diagnose the root cause before modifying the template or retrying. On the AWS Certified Developer Associate DVA-C02 exam, this scenario tests your understanding of CloudFormation’s troubleshooting workflow; a common trap is jumping straight to editing the template or checking the resource itself, which wastes time without knowing the actual error. Remember the mnemonic: “Name tells you what, Events tell you why.”
DVA-C02 Troubleshooting and Optimization Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. 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 troubleshooting an AWS CloudFormation stack that failed to create. The error message says 'The following resource(s) failed to create: [MyEC2Instance]'. What is the first step the developer should take?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
View the stack events in the CloudFormation console to see the specific error for the resource.
Option D is correct because when a CloudFormation stack fails to create, the error message only indicates which resource failed, not why. The first troubleshooting step is to view the stack events in the CloudFormation console, which provides detailed error messages for each resource, such as an API call failure, insufficient permissions, or a resource limit exceeded. This allows the developer to diagnose the root cause before making any changes.
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 stack with a new template.
Why it's wrong here
The stack failed to create; update is not possible.
✗
Delete the stack and try again.
Why it's wrong here
Deleting does not reveal the cause of failure.
✗
Review the CloudFormation template for syntax errors.
Why it's wrong here
Syntax errors would cause a different error; the resource creation failed.
✓
View the stack events in the CloudFormation console to see the specific error for the resource.
Why this is correct
Stack events provide detailed error messages for each resource.
Clue confirmation
The clue word "first" in the question point toward this answer.
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 jump to fixing the template or retrying the stack, overlooking that the specific error details are available in the stack events, which is the fastest path to identifying the actual cause.
Detailed technical explanation
How to think about this question
CloudFormation stack events are stored in the stack's event log and can be retrieved via the AWS CLI, SDK, or console. Each event includes a 'ResourceStatusReason' field that contains the exact error message from the underlying AWS service (e.g., EC2, IAM). For example, an EC2 instance creation failure might show 'You have requested more instances than your current instance limit allows', which points to a service quota issue rather than a template problem.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: View the stack events in the CloudFormation console to see the specific error for the resource. — Option D is correct because when a CloudFormation stack fails to create, the error message only indicates which resource failed, not why. The first troubleshooting step is to view the stack events in the CloudFormation console, which provides detailed error messages for each resource, such as an API call failure, insufficient permissions, or a resource limit exceeded. This allows the developer to diagnose the root cause before making any changes.
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.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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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