Question 734 of 1,511
DOP-C02 Security and Compliance Practice Question
A DevOps engineer is troubleshooting a failed CodeBuild project. The build fails with an error: 'Access Denied: Unable to put object to S3.' The build project has an S3 bucket as the artifact store. What should the engineer 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
✓
Add s3:PutObject permission to the CodeBuild service role for the artifact bucket.
The CodeBuild service role requires the s3:PutObject permission on the artifact S3 bucket to upload build artifacts. Option B is incorrect because enabling server-side encryption does not grant write permissions; the issue is a missing IAM permission. Option C is incorrect because CloudWatch Logs are used for build logs, not for S3 access; enabling them does not resolve the access denied error. Option D is incorrect because s3:GetObject permission is for reading objects from a source bucket, not for writing artifacts. The error specifically indicates a failure to put an object into the artifact bucket, so the needed permission is s3:PutObject on that bucket.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Add s3:PutObject permission to the CodeBuild service role for the artifact bucket.
Why this is correct
The service role lacks write permission.
- ✗
Enable server-side encryption on the artifact bucket.
Why it's wrong here
Encryption does not affect permissions.
- ✗
Enable CloudWatch Logs for the build project.
Why it's wrong here
Logs do not affect artifact upload.
- ✗
Add s3:GetObject permission to the CodeBuild service role for the source bucket.
Why it's wrong here
Source bucket may already have read, but error is about put.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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Last reviewed: Jun 20, 2026
This DOP-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 DOP-C02 exam.
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