DEA-C01 Data Ingestion and Transformation Practice Question
A company wants to migrate on-premises data to Amazon S3 using AWS DataSync. The data is 10 TB and the network bandwidth is 1 Gbps. The migration must be completed within 48 hours. What should the data engineer do to meet the deadline?
⚠ Common exam trap
Test-takers frequently assume S3 Transfer Acceleration is a bandwidth booster, but it only reduces latency for small objects over long distances, not the total transfer time for large datasets constrained by bandwidth.
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 AWS DataSync with multiple agents and enable data compression
AWS DataSync can use multiple agents in parallel to increase throughput, and enabling data compression reduces the amount of data transferred over the network. With 10 TB at 1 Gbps, the theoretical minimum transfer time is about 22.2 hours, but real-world overhead (protocol, retransmissions) often exceeds 48 hours without parallelism and compression. Multiple agents and compression together can achieve the required throughput within the deadline.
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 S3 Transfer Acceleration to speed up the transfer
Why it's wrong here
Transfer Acceleration can help but not as much as multiple agents and compression.
- ✗
Use AWS Snowball Edge to transfer the data physically
Why it's wrong here
Snowball is for large datasets or low bandwidth, but 10 TB over 1 Gbps can be done in ~22 hours, so Snowball may be unnecessary.
- ✓
Use AWS DataSync with multiple agents and enable data compression
Why this is correct
Multiple agents and compression maximize throughput to meet the deadline.
- ✗
Request a bandwidth increase from the ISP
Why it's wrong here
Bandwidth increase may not be possible in time.
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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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.