DEA-C01 Data Security and Governance Practice Question
Exhibit
Refer to the exhibit.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"kms:Decrypt",
"kms:GenerateDataKey"
],
"Resource": "arn:aws:kms:us-east-1:123456789012:key/1234abcd-12ab-34cd-56ef-1234567890ab"
}
]
}Refer to the exhibit. An IAM policy allows kms:Decrypt and kms:GenerateDataKey on a specific KMS key. A data engineer is unable to upload an object to an S3 bucket that uses SSE-KMS with that key. What is the MOST likely missing permission?
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
✓
s3:PutObject permission on the bucket.
The user is unable to upload an object to an S3 bucket that uses SSE-KMS. The IAM policy currently allows kms:Decrypt and kms:GenerateDataKey on the KMS key. However, to upload an object to an S3 bucket, the user also needs the s3:PutObject permission on the bucket. Therefore, the missing permission is s3:PutObject. Option A is incorrect because kms:Decrypt is already allowed. Option C is incorrect because kms:Encrypt is not required; GenerateDataKey is sufficient. Option D is incorrect because kms:CreateGrant is not required for uploading.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
kms:Decrypt permission on the key.
Why it's wrong here
Incorrect. The policy already allows kms:Decrypt on the KMS key.
- ✓
s3:PutObject permission on the bucket.
Why this is correct
Correct. The user lacks s3:PutObject permission on the S3 bucket.
- ✗
kms:Encrypt permission on the key.
Why it's wrong here
Incorrect. kms:Encrypt is not required; kms:GenerateDataKey is sufficient for uploading an object with SSE-KMS.
- ✗
kms:CreateGrant permission on the key.
Why it's wrong here
Incorrect. kms:CreateGrant is not required for uploading an object with SSE-KMS.
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 DEA-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 DEA-C01 exam.