DEA-C01 Data Store Management Practice Question
Exhibit
Refer to the exhibit.
{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::123456789012:role/DataLakeRole"
},
"Action": [
"s3:GetObject",
"s3:PutObject"
],
"Resource": "arn:aws:s3:::example-bucket/*"
},
{
"Effect": "Deny",
"Principal": "*",
"Action": "s3:*",
"Resource": "arn:aws:s3:::example-bucket/*",
"Condition": {
"Bool": {
"aws:SecureTransport": "false"
}
}
}
]
}Refer to the exhibit. A data engineer has attached this bucket policy to an S3 bucket. What is the effect of this policy?
⚠ Common exam trap
AWS often tests the distinction between encryption in transit (HTTPS/TLS) and encryption at rest (SSE), leading candidates to confuse the `aws:SecureTransport` condition with server-side encryption requirements.
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
✓
It allows the DataLakeRole to read and write objects, but only over HTTPS.
The bucket policy uses a condition key `aws:SecureTransport` set to `true`, which restricts access to HTTPS (TLS) connections only. The `Principal` is `DataLakeRole`, and the `Action` includes `s3:GetObject` and `s3:PutObject`, so the policy allows that role to read and write objects exclusively over HTTPS, enforcing encrypted data in transit.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It enforces server-side encryption for all objects written to the bucket.
Why it's wrong here
A bucket policy cannot enforce encryption at write time; that requires a Deny on s3:PutObject when s3:x-amz-server-side-encryption is absent, or default bucket encryption. The policy's actual statements govern access, not encryption. Encryption enforcement would be the goal in a compliance scenario.
- ✓
It allows the DataLakeRole to read and write objects, but only over HTTPS.
Why this is correct
The policy grants DataLakeRole s3:GetObject and s3:PutObject permissions, but the condition restricts access to requests made over TLS. Plain HTTP requests are denied, so the role can read and write objects only when the connection is encrypted via HTTPS.
- ✗
It allows anonymous access to the bucket for HTTPS requests.
Why it's wrong here
The policy's principal and condition blocks restrict access to a specific IAM role, so no anonymous grant exists. Anonymous HTTPS access would be the effect only if the policy used Principal "*" with a GetObject Allow and no restricting conditions.
- ✗
It denies all access to the bucket except for requests from the DataLakeRole.
Why it's wrong here
The policy grants permissions to DataLakeRole rather than denying everyone else; S3 policies are additive with IAM, so other principals with their own Allow remain unaffected. An explicit Deny on Principal "*" with a NotPrincipal or role condition would produce that blanket denial.
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
Related to this question
About these practice questions
Courseiva writes every DEA-C01 question from scratch — 1,321 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
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.