DBS-C01 Deployment and Migration Practice Question
A company is deploying a multi-region application with Amazon Aurora Global Database. They need to ensure that the secondary region can be promoted to primary with minimal data loss in the event of a regional failure. Which configuration should they use?
⚠ Common exam trap
Test-takers frequently confuse cross-Region read replicas (which are asynchronous and can lose data) with Aurora Global Database's storage-level replication, which provides near-zero RPO and automated promotion capabilities.
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
✓
Deploy Amazon Aurora Global Database with one primary Region and up to five secondary Regions.
Amazon Aurora Global Database is designed for low-latency cross-Region replication and provides a managed failover capability that promotes a secondary Region to primary with a Recovery Point Objective (RPO) of typically less than 1 second. This configuration meets the requirement of minimal data loss during a regional failure because replication is done at the storage layer, not through asynchronous binlog replication, ensuring near-zero lag.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Deploy Amazon Aurora Serverless with cross-Region replication.
Why it's wrong here
Aurora Serverless does not support cross-Region replication or Global Database.
- ✓
Deploy Amazon Aurora Global Database with one primary Region and up to five secondary Regions.
Why this is correct
Aurora Global Database provides low-latency reads and managed failover with minimal data loss.
- ✗
Deploy Amazon RDS for MySQL with cross-Region read replicas.
Why it's wrong here
Cross-Region read replicas for RDS MySQL do not provide managed global database failover.
- ✗
Deploy Amazon RDS for PostgreSQL with Multi-AZ and cross-Region snapshot copy.
Why it's wrong here
Multi-AZ is within a region; cross-Region snapshot copy does not provide automatic failover.
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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.