The correct choice is AWS Snowball Edge, as it is purpose-built for large-scale offline data transfer to S3 when network bandwidth is insufficient. With only 1 Gbps available, transferring 50 TB over the wire would take roughly 111 hours under ideal conditions, but real-world overhead, retransmissions, and competing traffic easily push that beyond the 10-day deadline—making a physical appliance the only viable option. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your ability to distinguish between network-dependent solutions (DataSync, Transfer Acceleration) and offline bulk transfer services; a common trap is assuming DataSync can handle massive datasets quickly, but it still relies on the same constrained pipe. Remember the memory tip: “When the pipe is too small, ship it all”—Snowball Edge bypasses bandwidth entirely by physically moving the data, making it the fastest path for compressible, historical bulk loads.
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company needs to transfer 50 TB of historical data from an on-premises HDFS cluster to Amazon S3. The network bandwidth is limited to 1 Gbps, and the transfer must complete within 10 days. The data is compressible. Which solution is MOST appropriate?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Snowball Edge to physically ship the data.
Option D is correct. AWS Snowball Edge is a physical device that can transfer large volumes quickly, bypassing network limitations. Option A is wrong because 1 Gbps would take ~111 hours for 50 TB, and with overhead it may exceed 10 days. Option B is wrong because DataSync also uses network and would be too slow. Option C is wrong because S3 Transfer Acceleration is for existing internet transfers, not bulk offline.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 AWS DataSync over a Direct Connect connection.
Why it's wrong here
DataSync can saturate 1 Gbps, but 50 TB at 1 Gbps takes ~111 hours, plus overhead may exceed 10 days.
✗
Use Amazon S3 Transfer Acceleration with multipart uploads.
Why it's wrong here
Transfer Acceleration relies on internet; still limited by 1 Gbps.
✗
Use multiple parallel AWS CLI sync commands over the internet.
Why it's wrong here
Internet bandwidth is even more limited and unreliable.
✓
Use AWS Snowball Edge to physically ship the data.
Why this is correct
Snowball Edge can transfer 50 TB in a few days, independent of network.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Snowball Edge to physically ship the data. — Option D is correct. AWS Snowball Edge is a physical device that can transfer large volumes quickly, bypassing network limitations. Option A is wrong because 1 Gbps would take ~111 hours for 50 TB, and with overhead it may exceed 10 days. Option B is wrong because DataSync also uses network and would be too slow. Option C is wrong because S3 Transfer Acceleration is for existing internet transfers, not bulk offline.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company needs to transfer 20 TB of historical data from an on-premises Hadoop cluster to Amazon S3. The network bandwidth is limited and the transfer must complete within one week. Which service should the company use?
easy
A.Amazon S3 Transfer Acceleration
✓ B.AWS Snowball Edge
C.AWS Direct Connect with DataSync
D.AWS DataSync over a VPN connection
Why B: Option C is correct because AWS Snowball is designed for large-scale data transfers with limited bandwidth. Option A is wrong because DataSync over the internet may not meet the deadline. Option B is wrong because the bandwidth is insufficient. Option D is wrong because S3 Transfer Acceleration speeds up uploads but still uses the internet.
Variation 2. A company needs to transfer 10 TB of historical data from an on-premises HDFS cluster to Amazon S3. The data is stored on a single 20 TB disk. The network link to AWS has a bandwidth of 1 Gbps. The transfer must be completed within 2 days. Which solution meets these requirements?
easy
✓ A.Use AWS Snowball Edge to transfer the data physically.
B.Use Amazon Kinesis Data Streams to stream data to S3.
C.Use AWS DMS to migrate data from HDFS to S3.
D.Use AWS CLI to copy data directly to S3 over the network.
Why A: Option B is correct because AWS Snowball Edge can physically ship the data, bypassing network bandwidth limits. Option A is wrong because 1 Gbps for 2 days can only transfer about 21.6 TB, which is enough, but network stability and other traffic may cause delays. Option C is wrong because AWS DMS is for database migration, not HDFS. Option D is wrong because Kinesis is for streaming, not bulk transfer.
Last reviewed: Jun 20, 2026
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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.
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