DBS-C01 Deployment and Migration Practice Question
A company needs to deploy a globally distributed application with a database that supports multi-region writes and automatic conflict resolution. Which AWS database service should be used?
⚠ Common exam trap
A common mix-up: candidates confuse Amazon Aurora Global Database (which is read-only in secondary Regions) with a multi-write solution, but DynamoDB Global Tables is the only AWS database service that natively supports multi-region writes and automatic conflict resolution.
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 is the correct choice because it provides a fully managed, multi-Region, multi-active database that replicates data across AWS Regions with automatic conflict resolution using last-writer-wins (LWW) or application-defined conflict resolution. This directly meets the requirement for multi-region writes and automatic conflict resolution without requiring custom replication logic.
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 DynamoDB Global Tables
Why this is correct
DynamoDB Global Tables support multi-region active-active writes with conflict resolution.
- ✗
Amazon Aurora Global Database
Why it's wrong here
Aurora Global Database supports multi-region reads, but writes go to primary region only.
- ✗
Amazon RDS for MySQL with Multi-AZ
Why it's wrong here
Multi-AZ is single-region, not multi-region writes.
- ✗
Amazon ElastiCache for Redis
Why it's wrong here
ElastiCache is a caching layer, not a durable database.
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Same concept, more angles
1 more way this is tested on DBS-C01
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 is deploying a new application that requires a highly available DynamoDB table with eventual consistency. The table will be accessed from multiple AWS Regions. What is the most appropriate deployment strategy?
easy- A.Use DynamoDB auto scaling to handle regional traffic
- B.Use DynamoDB Accelerator (DAX) to cache data across regions
- ✓ C.Use DynamoDB global tables
- D.Use DynamoDB Streams to replicate data to another region
Why C: DynamoDB global tables provide a fully managed, multi-Region, multi-active solution that automatically replicates data across selected AWS Regions, delivering eventual consistency and high availability for applications accessed from multiple Regions. This is the most appropriate strategy because it natively supports the requirement without custom code or additional infrastructure.
JA
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.