DBS-C01 Deployment and Migration Practice Question
A company is deploying a new multi-AZ Aurora MySQL database. The application requires read-heavy workloads and low latency. Which configuration will best meet these requirements?
⚠ Common exam trap
It's easy for candidates to confuse Multi-AZ with read scaling, assuming the standby instance can serve reads, but in Aurora Multi-AZ, the secondary is a writer instance for failover only, not a reader.
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
✓
Enable Aurora Auto Scaling with a target metric of average CPU utilization.
Aurora Auto Scaling dynamically adds reader instances based on the average CPU utilization metric, which directly addresses the read-heavy workload requirement by distributing read traffic across multiple replicas. This configuration ensures low latency by scaling out read capacity automatically as demand increases, without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable Multi-AZ and use the secondary for read traffic.
Why it's wrong here
In Aurora, Multi-AZ is built-in; you should use Aurora Replicas for read scaling, not the secondary.
- ✗
Deploy a single instance with one read replica in the same AZ.
Why it's wrong here
One replica may not be sufficient for read-heavy workloads, and being in the same AZ does not provide high availability.
- ✓
Enable Aurora Auto Scaling with a target metric of average CPU utilization.
Why this is correct
Aurora Auto Scaling adds reader instances automatically to handle read-heavy workloads, improving latency.
- ✗
Use an RDS Proxy in front of the database.
Why it's wrong here
RDS Proxy reduces connection overhead but does not directly improve read performance.
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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.