DEA-C01 Data Security and Governance Practice Question
A company is using AWS Glue to process data stored in Amazon S3. The data includes personally identifiable information (PII) that must be masked before being written to a separate output bucket. Which AWS service or feature can be used to automatically detect and mask sensitive data in the Glue ETL job?
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 Amazon Macie to identify sensitive data and apply masking logic in the Glue job.
Amazon Macie can be integrated with AWS Glue to automatically detect sensitive data like PII and apply masking logic within a Glue ETL job. Option A is incorrect because CloudWatch Logs are for monitoring and logging, not for data masking. Option C is incorrect because IAM policies control access permissions but do not mask data. Option D is incorrect because S3 Object Lock prevents object deletion or modification, not masking.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure CloudWatch Logs to filter and mask PII.
Why it's wrong here
CloudWatch Logs can filter, but not mask data in Glue ETL.
- ✓
Use Amazon Macie to identify sensitive data and apply masking logic in the Glue job.
Why this is correct
Amazon Macie can detect sensitive data, and the Glue job can use that information to mask it.
- ✗
Use an IAM policy to restrict access to the PII columns.
Why it's wrong here
IAM policies control access permissions, not data content masking.
- ✗
Enable S3 Object Lock on the output bucket.
Why it's wrong here
S3 Object Lock prevents object modification or deletion, not masking.
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 |
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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.