The correct answer is to use an AWS Snowball Edge device for offline transfer. This solution is ideal because when you need a large data transfer to S3 offline Snowball bypasses network constraints entirely; with only 100 Mbps bandwidth, transferring 10 TB would take over 10 days, far exceeding the 48-hour window, whereas Snowball Edge physically ships the data, making the transfer independent of network speed. On the AWS Certified Data Engineer Associate DEA-C01 exam, this scenario tests your understanding of when to choose offline versus online transfer methods—a common trap is to select DataSync or Transfer Acceleration, but remember that any online solution is still bottlenecked by available bandwidth. The key exam concept is that Snowball is purpose-built for petabyte-scale offline migrations when time and bandwidth are limited. Memory tip: think “Snowball for slow balls”—when your network is too slow, ship the data instead.
DEA-C01 Data Store Management Practice Question
This DEA-C01 practice question tests your understanding of data store management. 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 data engineer needs to transfer 10 TB of data from an on-premises Hadoop cluster to Amazon S3. The network bandwidth is limited to 100 Mbps, and the transfer must be completed within 48 hours. Which solution meets the requirements?
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 device to transfer data offline
Option D is correct because AWS Snowball Edge can transfer large data volumes offline within the time frame despite low bandwidth. Option A (S3 Transfer Acceleration) improves speed but not enough over 100 Mbps. Option B (Direct Connect) would require setup time. Option C (AWS DataSync) still depends on network bandwidth.
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 to transfer data online
Why it's wrong here
DataSync still uses the network and would be too slow.
✓
Use AWS Snowball Edge device to transfer data offline
Why this is correct
Snowball Edge can transfer 10 TB offline within days.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use S3 Transfer Acceleration over the internet
Why it's wrong here
Even with acceleration, 100 Mbps would take ~23 days for 10 TB.
✗
Set up AWS Direct Connect to increase bandwidth
Why it's wrong here
Direct Connect setup may exceed 48 hours and still relies on bandwidth.
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 Store Management — This question tests Data Store Management — 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 device to transfer data offline — Option D is correct because AWS Snowball Edge can transfer large data volumes offline within the time frame despite low bandwidth. Option A (S3 Transfer Acceleration) improves speed but not enough over 100 Mbps. Option B (Direct Connect) would require setup time. Option C (AWS DataSync) still depends on network bandwidth.
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.
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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.
Question Discussion
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