DEA-C01 Data Ingestion and Transformation Practice Question
A data engineer needs to ingest daily CSV files from an external FTP server into Amazon S3. The files are 5 GB each. Which service is MOST suitable to automate 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 DataSync
AWS DataSync is the most suitable service for automated, scheduled transfers of large files from an external FTP server to Amazon S3. It supports both one-time and recurring transfers and can handle high throughput for files up to 5 GB. S3 Transfer Acceleration only speeds up uploads to S3, not transfers from FTP servers. AWS Glue is an ETL service, not a file transfer tool. AWS AppSync is for real-time APIs, not batch file ingestion.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS AppSync
Why it's wrong here
AppSync is for GraphQL APIs, not for file ingestion.
- ✓
AWS DataSync
Why this is correct
DataSync supports scheduled transfers from FTP servers to S3 with built-in monitoring.
- ✗
Amazon S3 Transfer Acceleration
Why it's wrong here
Acceleration improves upload speed from client to S3, but cannot pull from FTP.
- ✗
AWS Glue
Why it's wrong here
Glue is an ETL service; not designed for file transfer from FTP.
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.