DEA-C01 Data Ingestion and Transformation Practice Question
A company uses S3 as a data lake. They want to ingest on-premises relational database data daily with full-load snapshots. The data volume is 500 GB per day. The database is accessible over the internet. Which service should they use for this ingestion?
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
✓
AWS Database Migration Service (DMS)
AWS Database Migration Service (DMS) can perform full-load migrations from on-premises databases to S3, making it ideal for daily snapshots of 500 GB. Option A is wrong because Kinesis Data Firehose is designed for streaming data, not for periodic database snapshots. Option B is wrong because while AWS Glue ETL can read from JDBC, it is not optimized for large full-load snapshots and lacks built-in replication capabilities. Option D is wrong because AWS Transfer Family is for file transfers over SFTP, FTPS, or FTP, not for direct database connections.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Kinesis Data Firehose
Why it's wrong here
Firehose is for streaming data, not scheduled full-load database snapshots.
- ✗
AWS Glue ETL job reading from JDBC
Why it's wrong here
Glue ETL can read from JDBC but may have performance issues with 500 GB daily full loads.
- ✓
AWS Database Migration Service (DMS)
Why this is correct
DMS supports full-load migration from on-premises databases to S3.
- ✗
AWS Transfer Family
Why it's wrong here
Transfer Family is for file transfers, not direct database connectivity.
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.