- A
Update the stack with a new parameter value.
Why wrong: You cannot update a failed stack; you must delete and recreate.
- B
Add an IAM role to the EC2 instance.
Why wrong: The error is about configuration, not permissions.
- C
Change the instance type or specify a different Availability Zone in the template.
The instance type is not supported in the selected AZ.
- D
Use a different Amazon Machine Image (AMI).
Why wrong: The error is about instance type, not AMI.
Question 1,501 of 1,616
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 using AWS CloudFormation to deploy a stack. The stack creation fails with a 'CREATE_FAILED' status for an EC2 instance resource. The event message says 'The requested configuration is currently not supported. Please check the documentation for supported configurations.' What should the developer do to resolve this 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
✓
Change the instance type or specify a different Availability Zone in the template.
The error 'The requested configuration is currently not supported' indicates that the specified instance type is not available in the chosen Availability Zone. To resolve this, the developer should modify the CloudFormation template to change the instance type to one that is supported in that AZ, or specify a different Availability Zone that supports the original instance type, then update the stack. Option C (change the instance type or specify a different Availability Zone) directly addresses this issue. Option A is incorrect because simply updating a parameter value without changing the instance type or AZ will not fix the unsupported configuration. Option B is irrelevant as the error is about hardware compatibility, not permissions. Option D is wrong because the AMI is not the cause; the instance type/AZ combination is unsupported regardless of the AMI.
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 parameter value.
Why it's wrong here
You cannot update a failed stack; you must delete and recreate.
- ✗
Add an IAM role to the EC2 instance.
Why it's wrong here
The error is about configuration, not permissions.
- ✓
Change the instance type or specify a different Availability Zone in the template.
Why this is correct
The instance type is not supported in the selected AZ.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a different Amazon Machine Image (AMI).
Why it's wrong here
The error is about instance type, not AMI.
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 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.
Visual reference
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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Troubleshooting and Optimization — study guide chapter
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
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: Change the instance type or specify a different Availability Zone in the template. — The error 'The requested configuration is currently not supported' indicates that the specified instance type is not available in the chosen Availability Zone. To resolve this, the developer should modify the CloudFormation template to change the instance type to one that is supported in that AZ, or specify a different Availability Zone that supports the original instance type, then update the stack. Option C (change the instance type or specify a different Availability Zone) directly addresses this issue. Option A is incorrect because simply updating a parameter value without changing the instance type or AZ will not fix the unsupported configuration. Option B is irrelevant as the error is about hardware compatibility, not permissions. Option D is wrong because the AMI is not the cause; the instance type/AZ combination is unsupported regardless of the AMI.
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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Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 20, 2026
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