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:::example-bucket/*"
},
{
"Effect": "Allow",
"Action": [
"kinesis:PutRecord",
"kinesis:PutRecords"
],
"Resource": "arn:aws:kinesis:us-east-1:123456789012:stream/my-stream"
},
{
"Effect": "Allow",
"Action": [
"lambda:InvokeFunction"
],
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:my-function"
}
]
}Refer to the exhibit. A data engineer has attached this IAM policy to an AWS Glue job role. The Glue job fails when trying to write transformed data to an S3 bucket located in a different AWS account. What is the most likely reason?
⚠ Common exam trap
Many exam-takers assume s3:PutObject alone is sufficient for writing to S3, but AWS requires s3:ListBucket for bucket-level operations like listing and validation, especially in cross-account scenarios where the bucket's existence must be confirmed.
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 does not grant s3:ListBucket, and the bucket policy may not allow cross-account access
The IAM policy shown does not include the s3:ListBucket permission, which is required for the Glue job to list objects in the S3 bucket before writing. Additionally, cross-account access requires both the source account's IAM policy (this one) to grant write permissions and the target account's S3 bucket policy to explicitly allow the source account's role, which may not be configured. Without s3:ListBucket, the Glue job cannot verify the bucket's existence or structure, causing the write operation to fail.
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 does not allow lambda:InvokeAsync
Why it's wrong here
Lambda invoke is allowed; the issue is not Lambda.
- ✗
The Glue job role does not have permissions to write to S3
Why it's wrong here
The policy allows PutObject on the bucket, but cross-account requires additional setup.
- ✓
The policy does not grant s3:ListBucket, and the bucket policy may not allow cross-account access
Why this is correct
Cross-account S3 access requires both bucket policy and IAM permissions, including ListBucket.
- ✗
The policy does not include kinesis:DescribeStream
Why it's wrong here
The job is not using Kinesis; the error is about S3.
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.