PAS-C01 Operations and Maintenance Practice Question
A DevOps engineer is troubleshooting an AWS CodePipeline that fails at the Deploy stage. The pipeline deploys a static website to an S3 bucket configured for website hosting. The error message indicates 'Access Denied' when the pipeline tries to upload files. Which IAM policy should be attached to the CodePipeline service role to resolve this?
⚠ Common exam trap
Many exam-takers choose a broad managed policy like AdministratorAccess or CloudFrontFullAccess, overlooking that the minimal custom policy with specific S3 actions is the correct and secure solution for the 'Access Denied' error.
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
✓
A custom policy allowing s3:PutObject and s3:ListBucket on the target bucket.
The CodePipeline service role needs permissions to write objects to the S3 bucket and list its contents to verify the upload. A custom policy with s3:PutObject and s3:ListBucket on the target bucket grants exactly these required actions, resolving the 'Access Denied' error during the Deploy stage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CloudFrontFullAccess
Why it's wrong here
This policy is for CloudFront distributions, not S3 bucket operations.
- ✗
AdministratorAccess
Why it's wrong here
Overly permissive and not a best practice.
- ✗
AmazonS3ReadOnlyAccess
Why it's wrong here
This policy only allows read access, not write.
- ✓
A custom policy allowing s3:PutObject and s3:ListBucket on the target bucket.
Why this is correct
These are the minimum permissions needed to upload files to S3.
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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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 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 PAS-C01 exam.