DEA-C01 Data Ingestion and Transformation Practice Question

Exhibit

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:PutObject"
      ],
      "Resource": "arn:aws:s3:::my-data-bucket/*"
    },
    {
      "Effect": "Deny",
      "Action": [
        "s3:DeleteObject"
      ],
      "Resource": "arn:aws:s3:::my-data-bucket/*"
    }
  ]
}

Refer to the exhibit. A data engineer is configuring an IAM policy for an AWS Glue ETL job that reads data from the 'my-data-bucket' S3 bucket, transforms it, and writes the output back to the same bucket. The engineer wants to prevent accidental deletion of objects. Based on the policy, which statement is true about the Glue job's permissions?

⚠ Common exam trap

The trap here is that candidates may overlook the explicit deny statement and assume the job has full S3 access based on the allow actions, forgetting that an explicit deny overrides all allows.

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 job can read and write objects, but cannot delete objects.

The IAM policy explicitly denies the `s3:DeleteObject` action, which prevents the Glue job from deleting objects in the 'my-data-bucket' S3 bucket. The policy allows `s3:GetObject` and `s3:PutObject` actions, enabling the job to read and write objects as required for the ETL process. This ensures the job can perform its transformation tasks without the risk of accidental deletion.

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 job can write objects but cannot read objects.
Why it's wrong here
GetObject is allowed.
✗
The job can read objects but cannot write objects.
Why it's wrong here
PutObject is allowed.
✗
The job can read and write, but may also delete objects.
Why it's wrong here
DeleteObject is denied.
✓
The job can read and write objects, but cannot delete objects.
Why this is correct
Get and Put allowed; Delete denied.

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

DEA-C01 Data Ingestion and Transformation Practice Question

Exhibit

Why each option matters

Option-by-option breakdown

AWS S3 Storage Class Comparison

Related to this question