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 CodeDeploy to deploy a web application to an Auto Scaling group of Amazon EC2 instances. The deployment fails with the error 'The overall deployment failed because too many individual instances failed deployment, too few healthy instances are available for deployment, or some instances in your deployment group are experiencing problems.' The developer needs to identify the root cause. Which AWS service should the developer use to view detailed error logs from the failed deployment?
Amazon CloudWatch Logs (if configured) or the CodeDeploy agent log files on the EC2 instances
The CodeDeploy agent logs provide detailed error information for troubleshooting.
AWS X-Ray
Why wrong: X-Ray is for tracing requests, not for deployment logs.
AWS CloudTrail
Why wrong: CloudTrail records API calls, not agent-level deployment logs.
AWS CodeDeploy console
Why wrong: The console shows deployment status but not detailed agent logs.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon CloudWatch Logs (if configured) or the CodeDeploy agent log files on the EC2 instances
Option A is correct because when a CodeDeploy deployment fails due to instance-level errors, the most direct way to investigate is to examine the CodeDeploy agent logs located on each EC2 instance at `/opt/codedeploy-agent/deployment-root/deployment-logs/codedeploy-agent.log`. If Amazon CloudWatch Logs has been configured to stream these logs, you can also view them centrally in the CloudWatch console. These logs contain detailed error messages from the `codedeploy-agent` process, including script failures, permission issues, or missing dependencies that caused the deployment to fail.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon CloudWatch Logs (if configured) or the CodeDeploy agent log files on the EC2 instances
Why this is correct
The CodeDeploy agent logs provide detailed error information for troubleshooting.
Related concept
Read the scenario before looking for a memorised answer.
AWS X-Ray
Why it's wrong here
X-Ray is for tracing requests, not for deployment logs.
AWS CloudTrail
Why it's wrong here
CloudTrail records API calls, not agent-level deployment logs.
AWS CodeDeploy console
Why it's wrong here
The console shows deployment status but not detailed agent logs.
Common exam traps
The trap here is that candidates assume the CodeDeploy console provides detailed error logs, but it only shows aggregated failure counts and high-level messages, while the actual root cause is buried in the agent logs on the EC2 instances or in CloudWatch Logs if configured.
Trap categories for this question
Command / output trap
The console shows deployment status but not detailed agent logs.
Detailed technical explanation
The CodeDeploy agent runs as a background process on each EC2 instance and writes logs to `/opt/codedeploy-agent/deployment-root/deployment-logs/codedeploy-agent.log`. These logs include exit codes from lifecycle event hooks (e.g., `ApplicationStop`, `BeforeInstall`, `AfterInstall`, `ApplicationStart`, `ValidateService`). A common subtle issue is that the agent may fail silently if the `codedeploy-agent` service is not running or if the instance profile lacks the required IAM permissions (e.g., `codedeploy:PutHostCommandSuccess`). In real-world scenarios, developers often overlook that the agent logs are rotated and may need to be retrieved from a failed instance before it is terminated by an Auto Scaling group.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Deployment — study guide chapter
Learn the concepts, then practise the questions
Deployment practice questions
Targeted practice on this topic area only
All DVA-C02 questions
1,616 questions across all exam domains
AWS Certified Developer Associate DVA-C02 study guide
Full concept coverage aligned to exam objectives
DVA-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise DVA-C02 questions linked to Development with AWS Services.
Practise DVA-C02 questions linked to Security.
Practise DVA-C02 questions linked to Deployment.
Practise DVA-C02 questions linked to Troubleshooting and Optimization.
Practise DVA-C02 questions linked to DVA-C02 fundamentals.
Practise DVA-C02 questions linked to DVA-C02 scenario.
Practise DVA-C02 questions linked to DVA-C02 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon CloudWatch Logs (if configured) or the CodeDeploy agent log files on the EC2 instances — Option A is correct because when a CodeDeploy deployment fails due to instance-level errors, the most direct way to investigate is to examine the CodeDeploy agent logs located on each EC2 instance at `/opt/codedeploy-agent/deployment-root/deployment-logs/codedeploy-agent.log`. If Amazon CloudWatch Logs has been configured to stream these logs, you can also view them centrally in the CloudWatch console. These logs contain detailed error messages from the `codedeploy-agent` process, including script failures, permission issues, or missing dependencies that caused the deployment to fail.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
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 →
Last reviewed: Jun 24, 2026
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
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.