DEA-C01 Data Security and Governance Practice Question
A company uses AWS Glue to process sensitive data stored in Amazon S3. The security team requires that all data in transit between AWS Glue and S3 be encrypted. Which configuration should be used to meet this requirement?
⚠ Common exam trap
Test-takers frequently confuse encryption at rest (SSE-S3, SSE-KMS, client-side encryption) with encryption in transit (TLS/HTTPS), and may incorrectly assume that enabling default encryption or using KMS keys secures the data during transfer.
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
✓
Use an S3 bucket policy that denies requests not using HTTPS.
Requiring HTTPS for all requests to the S3 bucket ensures that data in transit between AWS Glue and S3 is encrypted using TLS. By using an S3 bucket policy with a condition that denies requests where `aws:SecureTransport` is false, the company enforces encryption for all connections, including those from AWS Glue. This meets the security requirement without needing to modify Glue or S3 configurations beyond the bucket policy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use an S3 bucket policy that denies requests not using HTTPS.
Why this is correct
This enforces encryption in transit for all requests.
- ✗
Use an AWS KMS key to encrypt the data before uploading to S3.
Why it's wrong here
Client-side encryption does not guarantee encryption in transit.
- ✗
Configure AWS Glue to use SSL by setting the 'ssl' parameter to 'true'.
Why it's wrong here
SSL is already enabled by default; a bucket policy is needed to enforce it.
- ✗
Enable default encryption on the S3 bucket using SSE-S3.
Why it's wrong here
This protects data at rest, not in transit.
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.