SAP-C02 Continuous Improvement for Existing Solutions Practice Question
A company uses Amazon RDS for MySQL with Multi-AZ deployment. They notice that during a failover, the application experiences a brief outage but then recovers. They want to minimize the failover time. Which action will most effectively reduce the failover time?
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 Amazon RDS Proxy.
Enabling Amazon RDS Proxy provides connection pooling and reduces failover time by keeping connections alive during failover. Option A is wrong because disabling Multi-AZ removes high availability and increases downtime. Option B is wrong because read replicas are for read scaling and promoting a replica involves manual intervention and DNS changes, which does not minimize failover time as effectively as RDS Proxy. Option D is wrong because increasing the DB instance size improves performance but does not directly affect failover time.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable Multi-AZ to avoid failover altogether.
Why it's wrong here
This removes high availability, increasing potential downtime.
- ✗
Create a read replica and promote it during failover.
Why it's wrong here
This is a manual process and doesn't reduce automatic failover time.
- ✓
Enable Amazon RDS Proxy.
Why this is correct
RDS Proxy maintains connections across failovers, reducing downtime.
- ✗
Increase the DB instance size to improve performance.
Why it's wrong here
Instance size does not affect failover time.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.