AWS Certified SysOps Administrator – Associate (legacy) — Question 189

A user has launched an RDS MySQL DB with the Multi AZ feature. The user has scheduled the scaling of instance storage during maintenance window. What is the correct order of events during maintenance window?
1. Perform maintenance on standby
2. Promote standby to primary
3. Perform maintenance on original primary
4. Promote original master back as primary

Answer options

• A. 1, 2, 3, 4
• B. 1, 2, 3
• C. 2, 3, 1, 4

Correct answer: B

Explanation

The correct sequence is 1, 2, 3, which means maintenance is first performed on the standby instance, then the standby is promoted to primary, and finally maintenance is conducted on the original primary. Option A includes an additional step of promoting the original master back, which does not occur in this scenario, and option C presents an incorrect order of operations.