DEA-C01 Data Ingestion and Transformation Practice Question
Exhibit
Refer to the exhibit.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"s3:GetObject",
"s3:PutObject"
],
"Resource": "arn:aws:s3:::my-data-lake/*"
},
{
"Effect": "Allow",
"Action": [
"glue:StartJobRun",
"glue:GetJobRun"
],
"Resource": "*"
}
]
}The exhibit shows an IAM policy attached to a role used by an AWS Glue ETL job. The job reads from an S3 bucket and writes to another S3 bucket. However, the job fails with an access denied error when trying to write to the output bucket. What is the most likely cause?
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 policy only allows PutObject on the my-data-lake bucket, but the job writes to a different bucket
The policy allows s3:PutObject on my-data-lake/*, but if the output bucket is different (e.g., my-output-bucket), the policy does not cover it. The error is due to missing permissions on the output bucket. The Glue service role may not have permissions to write to the output bucket. The policy does not restrict resource to only one bucket, but the ARN specifies my-data-lake. The job might be trying to write to a different bucket. There is no issue with Glue actions.
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 policy is missing permissions for AWS KMS to decrypt/encrypt objects
Why it's wrong here
No KMS actions are in the policy, but the error is access denied, not KMS related.
- ✗
The policy does not allow glue:StartJobRun on the specific job
Why it's wrong here
The policy allows glue:StartJobRun on all resources (*), so it is not the issue.
- ✓
The policy only allows PutObject on the my-data-lake bucket, but the job writes to a different bucket
Why this is correct
The S3 permissions are scoped to my-data-lake/*; if output bucket is different, access is denied.
- ✗
The policy does not include s3:ListBucket permission
Why it's wrong here
ListBucket is not required for PutObject; access denied is likely due to missing PutObject on the target bucket.
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.