- A
The CodeDeploy application is not configured correctly.
Why wrong: Elastic Beanstalk uses its own deployment mechanism, not CodeDeploy.
- B
The IAM role for CodePipeline lacks permissions to describe EC2 instances.
Why wrong: This would cause an access denied error, not 'no instances found'.
- C
The build artifact is not named correctly for Elastic Beanstalk.
Why wrong: Incorrect artifact name would cause a different error, not 'no instances found'.
- D
The Elastic Beanstalk environment has no running instances due to a failed health check.
If no instances exist, the deployment cannot proceed.
Question 1,526 of 1,616
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. 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 uses AWS CodePipeline to deploy a Node.js application to AWS Elastic Beanstalk. The build stage runs successfully, but the deploy stage fails with an error: 'The deployment failed because no instances were found for the environment.' What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
✓
The Elastic Beanstalk environment has no running instances due to a failed health check.
Option D is correct because the error 'no instances were found for the environment' directly indicates that the Elastic Beanstalk environment has no running EC2 instances. This typically occurs when the environment's health checks have failed, causing all instances to be terminated or remain in a degraded state. Without any healthy instances, CodePipeline cannot deploy the application, as Elastic Beanstalk requires at least one running instance to perform a deployment.
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.
- ✗
The CodeDeploy application is not configured correctly.
Why it's wrong here
Elastic Beanstalk uses its own deployment mechanism, not CodeDeploy.
- ✗
The IAM role for CodePipeline lacks permissions to describe EC2 instances.
Why it's wrong here
This would cause an access denied error, not 'no instances found'.
- ✗
The build artifact is not named correctly for Elastic Beanstalk.
Why it's wrong here
Incorrect artifact name would cause a different error, not 'no instances found'.
- ✓
The Elastic Beanstalk environment has no running instances due to a failed health check.
Why this is correct
If no instances exist, the deployment cannot proceed.
Clue confirmation
The clue word "most likely" 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 confuse the error with a permissions or artifact issue, but the specific wording 'no instances were found' points directly to the Elastic Beanstalk environment's instance count, not to IAM roles or build outputs.
Detailed technical explanation
How to think about this question
Elastic Beanstalk environments maintain a desired capacity of EC2 instances managed by Auto Scaling groups. If the environment's health check fails (e.g., due to a failing application version, insufficient resources, or network misconfiguration), the Auto Scaling group may terminate unhealthy instances and fail to launch replacements, leading to zero running instances. CodePipeline's deploy action calls Elastic Beanstalk's UpdateEnvironment API, which requires at least one healthy instance to proceed; otherwise, it returns the 'no instances found' error.
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.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The Elastic Beanstalk environment has no running instances due to a failed health check. — Option D is correct because the error 'no instances were found for the environment' directly indicates that the Elastic Beanstalk environment has no running EC2 instances. This typically occurs when the environment's health checks have failed, causing all instances to be terminated or remain in a degraded state. Without any healthy instances, CodePipeline cannot deploy the application, as Elastic Beanstalk requires at least one running instance to perform a deployment.
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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
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