Quick Answer
The answer is AWS Snowball Edge, used in conjunction with Amazon S3 as the destination. This is correct because transferring 50 TB of data over a limited bandwidth of 100 Mbps would take over 50 days, far exceeding the 10-day requirement, making a physical appliance the only viable solution. Snowball Edge is a ruggedized device that allows you to ship large volumes of data to AWS, bypassing network constraints entirely. On the AWS Certified Machine Learning Specialty MLS-C01 exam, this scenario tests your understanding of hybrid storage migration strategies, often appearing as a trap where candidates mistakenly choose Direct Connect or VPN, which are unsuitable for bulk offline transfer. A common memory tip is to remember that when bandwidth is limited and time is tight, think “ship it, don’t stream it”—Snowball Edge is the go-to for moving terabytes or petabytes when the network is the bottleneck.
This MLS-C01 practice question tests your understanding of data engineering. 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 move 50 TB of data from an on-premises data center to Amazon S3. The company has a limited internet bandwidth of 100 Mbps. The data transfer must be completed within 10 days. Which TWO services should the company use together to meet these requirements?
Amazon S3 as the destination
Data is ultimately stored in S3.
AWS Direct Connect
Why wrong: Direct Connect requires physical setup and does not solve the bandwidth limitation.
AWS Site-to-Site VPN
Why wrong: VPN relies on the same limited internet bandwidth.
AWS Snowball Edge
Snowball is designed for large data transfers over physical media.
AWS DataSync over the internet
Why wrong: DataSync over 100 Mbps would exceed the 10-day window.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon S3 as the destination
Options A and E are correct. AWS Snowball Edge is a physical device for large data transfer, and S3 is the destination. Option B is wrong because internet transfer at 100 Mbps would take more than 50 days. Option C is wrong because Direct Connect is for dedicated network, not for physical transfer. Option D is wrong because VPN is not designed for bulk data transfer.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon S3 as the destination
Why this is correct
Data is ultimately stored in S3.
Related concept
Static NAT maps one inside address to one outside address.
AWS Direct Connect
Why it's wrong here
Direct Connect requires physical setup and does not solve the bandwidth limitation.
AWS Site-to-Site VPN
Why it's wrong here
VPN relies on the same limited internet bandwidth.
AWS Snowball Edge
Why this is correct
Snowball is designed for large data transfers over physical media.
Related concept
Static NAT maps one inside address to one outside address.
AWS DataSync over the internet
Why it's wrong here
DataSync over 100 Mbps would exceed the 10-day window.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related MLS-C01 NAT questions on configuration and troubleshooting.
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FAQ
Data Engineering — This question tests Data Engineering — Static NAT maps one inside address to one outside address..
The correct answer is: Amazon S3 as the destination — Options A and E are correct. AWS Snowball Edge is a physical device for large data transfer, and S3 is the destination. Option B is wrong because internet transfer at 100 Mbps would take more than 50 days. Option C is wrong because Direct Connect is for dedicated network, not for physical transfer. Option D is wrong because VPN is not designed for bulk data transfer.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related MLS-C01 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
About these practice questions
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Same concept, more angles
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 10 TB of data from an on-premises data center to Amazon S3. The network bandwidth is limited to 100 Mbps, and the transfer must complete within 5 days. Which TWO options are viable? (Choose TWO.)
easyWhy C: AWS Snowball Edge is a physical device for large data transfers over slow networks. AWS DataSync can be used if there is some bandwidth, but with 100 Mbps, it would take ~10 days, exceeding the 5-day window. Option B (S3 Transfer Acceleration) uses existing internet, which is still limited. Option C (Direct Connect) would require setup time and may not meet the window. Option E (S3 Multipart Upload) is for uploading files, not for bulk transfer over slow link.
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Last reviewed: Jun 20, 2026
This MLS-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 MLS-C01 exam.
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