DBS-C01 Workload-Specific Database Design Practice Question
A company is designing a database for a global application that requires active-active replication across two AWS Regions. The database must support multi-master writes with conflict resolution. Which AWS database service should they use?
⚠ Common exam trap
Many exam-takers confuse Amazon Aurora Global Database (which is single-master) with a multi-master solution, because its name includes 'Global' and it supports cross-Region replication, but it does not allow writes in secondary Regions.
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
✓
Amazon DynamoDB Global Tables
Amazon DynamoDB Global Tables provides fully managed, multi-Region, multi-master replication, enabling active-active writes across two AWS Regions with built-in conflict resolution using last-writer-wins (based on timestamp). This directly meets the requirement for multi-master writes and conflict resolution without custom code.
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 Aurora Global Database
Why it's wrong here
Aurora Global Database supports one primary Region for writes; it is not multi-master.
- ✓
Amazon DynamoDB Global Tables
Why this is correct
DynamoDB Global Tables provide multi-master active-active replication with conflict resolution.
- ✗
Amazon Redshift
Why it's wrong here
Redshift is a data warehouse, not for transactional multi-Region workloads.
- ✗
Amazon RDS for MySQL with Multi-AZ
Why it's wrong here
Multi-AZ is for high availability within a single Region, not multi-Region replication.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.