CV0-004 Deployment Practice Question
A company is migrating 50 TB of data from an on-premises file server to Amazon S3. The migration must be completed within two weeks and the internet connection is slow. Which TWO AWS services can accelerate the transfer?
⚠ Common exam trap
The trap is that candidates may mistakenly choose DataSync or Direct Connect. DataSync requires a network connection and is too slow for 50 TB with slow internet. Direct Connect involves setup delays and still relies on network speed. The correct pairing is Snowball for offline physical transfer and S3 Transfer Acceleration to optimize any internet-based transfers, but note that for such a large dataset and tight deadline, Snowball is the primary enabler.
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 Snowball
AWS Snowball (Option D) is a petabyte-scale data transport solution that uses secure physical devices to transfer large amounts of data to AWS, bypassing the internet entirely. For a 50 TB migration over a slow connection within a two-week window, Snowball is ideal because it avoids network bandwidth constraints and can transfer data at the speed of shipping, not the internet.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon S3 multipart upload
Why it's wrong here
Multipart upload helps with large files but does not accelerate overall transfer speed.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect is a dedicated network, but may not be feasible quickly.
- ✗
AWS DataSync
Why it's wrong here
DataSync uses the network, not ideal for slow connections.
- ✓
AWS Snowball
Why this is correct
Snowball physically ships data, bypassing the slow internet.
- ✓
S3 Transfer Acceleration
Why this is correct
Transfer Acceleration speeds up uploads via edge locations.
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 CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.