SAP-C02 Design for New Solutions Practice Question
Exhibit
Refer to the exhibit.
```
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": "s3:PutObject",
"Resource": "arn:aws:s3:::my-bucket/*",
"Condition": {
"StringEquals": {
"s3:x-amz-acl": "bucket-owner-full-control"
}
}
}
]
}
```Refer to the exhibit. An IAM policy is attached to a user who needs to upload objects to an S3 bucket owned by another AWS account. The uploads are failing with access denied. What is the most likely cause?
⚠ Common exam trap
Test-takers frequently assume cross-account S3 access failures are always due to missing IAM or bucket policy permissions, but AWS often tests the subtle requirement of including the `bucket-owner-full-control` ACL header to ensure object ownership transfers to the bucket owner.
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 upload request does not include the required ACL header.
When an IAM user in Account A uploads objects to an S3 bucket in Account B, the bucket policy must explicitly grant the cross-account principal `s3:PutObject` permission. However, if the bucket is configured to require the `bucket-owner-full-control` canned ACL (or a specific ACL header) for uploaded objects, the request must include that ACL header. Without it, S3 denies the upload even if the IAM policy and bucket policy otherwise allow the action. This is a common requirement when the bucket owner wants to ensure they retain full control of objects uploaded by other accounts.
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 upload request does not include the required ACL header.
Why this is correct
The condition enforces the ACL header.
- ✗
The resource ARN is incorrect.
Why it's wrong here
The ARN is valid.
- ✗
The bucket policy denies the request.
Why it's wrong here
No bucket policy is shown.
- ✗
The user does not have s3:PutObject permission.
Why it's wrong here
The policy allows s3:PutObject.
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 |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-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 SAP-C02 exam.