Question 1,389 of 1,663
DBS-C01 Deployment and Migration Practice Question
A company is deploying a new multi-AZ application that requires a relational database. The database must be highly available and must automatically failover to a standby in another Availability Zone within minutes. The database size is 500 GB and the workload is read-heavy. Which AWS RDS configuration meets these requirements?
⚠ Common exam trap
Test-takers frequently confuse Aurora's built-in high availability with the explicit 'Multi-AZ' feature of RDS, or assume that a cross-Region read replica provides automatic failover, when in fact it requires manual promotion and does not meet the 'within minutes' automatic failover requirement.
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 RDS for MySQL with Multi-AZ and a read replica in a different AZ
Deploying Amazon RDS for MySQL with Multi-AZ provides automatic failover to a standby in a different Availability Zone within minutes, meeting the high availability requirement. Adding a read replica in a different AZ offloads read traffic, which is ideal for the read-heavy workload, without affecting the primary database's performance.
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 with Multi-AZ
Why it's wrong here
Amazon Aurora does not have a 'Multi-AZ' option; it uses a cluster with storage in multiple AZs automatically.
- ✗
Deploy Amazon RDS for PostgreSQL with a cross-Region read replica
Why it's wrong here
Cross-Region replica is not for automatic failover within the same Region.
- ✓
Deploy Amazon RDS for MySQL with Multi-AZ and a read replica in a different AZ
Why this is correct
Multi-AZ provides automatic failover; read replica improves read performance.
- ✗
Deploy Amazon RDS for Oracle with RDS Proxy
Why it's wrong here
RDS Proxy does not provide high availability or automatic failover.
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Last reviewed: Jul 4, 2026
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.
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