DBS-C01 Deployment and Migration Practice Question
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?
⚠ Common exam trap
Watch out — 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.
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.
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.
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.
- ✗
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.
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This DBS-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 DBS-C01 exam.