Question 1,590 of 1,663
DBS-C01 Management and Operations Practice Question
A company uses Amazon Aurora MySQL-Compatible Edition. The database specialist notices that the DB cluster's failover time is longer than expected. The primary instance is using a db.r5.large instance class. Which change would most likely 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
✓
Use a larger instance class for the Aurora Replicas.
Using a larger instance class for Aurora replicas ensures they can handle the workload after failover, potentially reducing failover time. However, the key factor is that Aurora failover is typically fast, but if replicas are undersized, the time to promote and become fully operational increases. Using a larger instance class for the replicas (or all instances) can help.
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 Backtrack on the DB cluster.
Why it's wrong here
Backtrack is for point-in-time recovery, not failover performance.
- ✓
Use a larger instance class for the Aurora Replicas.
Why this is correct
Larger replicas can process transactions faster during promotion, reducing failover time.
- ✗
Increase the number of Aurora Replicas.
Why it's wrong here
More replicas can improve read scaling but do not directly reduce failover time.
- ✗
Enable Multi-AZ deployment for the DB cluster.
Why it's wrong here
Aurora is already Multi-AZ by default; enabling Multi-AZ is not applicable.
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Last reviewed: Jun 20, 2026
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