- A
Use DynamoDB global tables to replicate data across regions.
Global tables automatically replicate data across regions, simplifying migration.
- B
Export the table to S3 using AWS Data Pipeline, then import into DynamoDB in the target region.
Why wrong: This method is manual and less efficient than global tables.
- C
Set up DynamoDB Streams and write a custom consumer to replicate data to the target region.
Why wrong: While possible, this requires custom development and is less efficient than using global tables.
- D
Use AWS DMS to replicate data from on-premises to DynamoDB.
Why wrong: DMS does not support DynamoDB as a source database.
Question 130 of 1,730
DBS-C01 Deployment and Migration Practice Question
This DBS-C01 practice question tests your understanding of deployment and migration. 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 is migrating an on-premises DynamoDB table to Amazon DynamoDB in another AWS region. What is the most efficient method to migrate the data?
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 DynamoDB global tables to replicate data across regions.
Option A is correct because DynamoDB global tables provide a fully managed, multi-region, multi-master replication solution that automatically replicates data across AWS regions with low latency. This eliminates the need for custom code or external tools, making it the most efficient method for migrating an on-premises DynamoDB table to another region, as it handles ongoing replication and conflict resolution natively.
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 DynamoDB global tables to replicate data across regions.
Why this is correct
Global tables automatically replicate data across regions, simplifying migration.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Export the table to S3 using AWS Data Pipeline, then import into DynamoDB in the target region.
Why it's wrong here
This method is manual and less efficient than global tables.
- ✗
Set up DynamoDB Streams and write a custom consumer to replicate data to the target region.
Why it's wrong here
While possible, this requires custom development and is less efficient than using global tables.
- ✗
Use AWS DMS to replicate data from on-premises to DynamoDB.
Why it's wrong here
DMS does not support DynamoDB as a source database.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse DynamoDB global tables with DynamoDB Streams or AWS DMS, assuming that manual replication or database migration services are necessary, when in fact global tables are the simplest and most efficient solution for cross-region migration of DynamoDB tables.
Detailed technical explanation
How to think about this question
DynamoDB global tables leverage the DynamoDB Streams API internally to capture item-level changes and replicate them across regions using a last-writer-wins conflict resolution mechanism. The replication is asynchronous but typically completes within seconds, and it requires that the table be in the DynamoDB Standard or DynamoDB Standard-IA table class with streams enabled. In a real-world migration scenario, you would first create a global table in the source region, then add the target region as a replica, and the existing data is automatically copied via a backfill process without downtime.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Deployment and Migration — study guide chapter
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Deployment and Migration — This question tests Deployment and Migration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use DynamoDB global tables to replicate data across regions. — Option A is correct because DynamoDB global tables provide a fully managed, multi-region, multi-master replication solution that automatically replicates data across AWS regions with low latency. This eliminates the need for custom code or external tools, making it the most efficient method for migrating an on-premises DynamoDB table to another region, as it handles ongoing replication and conflict resolution natively.
What should I do if I get this DBS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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