DEA-C01 Data Store Management Practice Question
A data engineer needs to store streaming data from multiple sources into Amazon S3. The data should be organized by source, date, and hour. The engineer wants to minimize processing overhead. Which THREE S3 features should the engineer use to achieve this? (Choose THREE.)
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
✓
S3 Inventory to list objects and their metadata.
S3 prefixes organize objects into a hierarchy. S3 Inventory provides a list of objects. S3 Event Notifications trigger downstream processing. Batch Operations are for bulk actions, not organization. Object Lock is for retention. S3 Select is for querying within files.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
S3 Inventory to list objects and their metadata.
Why this is correct
Inventory helps audit and manage the stored data.
- ✗
S3 Object Lock to prevent object modifications.
Why it's wrong here
Object Lock is for compliance, not for organization.
- ✗
S3 Batch Operations to rename objects after upload.
Why it's wrong here
Batch Operations are for bulk actions, not for organizing streaming data.
- ✓
S3 Event Notifications to invoke Lambda functions for data processing.
Why this is correct
Event notifications enable near-real-time processing.
- ✓
S3 prefixes to create a folder structure (e.g., source=.../date=.../hour=...).
Why this is correct
Prefixes allow logical organization of objects.
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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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.