AWS Certified CloudOps Engineer Associate SOA-C03 Practice Question

A company hosts its production MySQL database on Amazon RDS in the us-east-1 Region. Compliance requires the workload to survive a complete regional outage with a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 4 hours. The operations team must minimize ongoing costs while meeting these objectives. Which solution should the company implement?

Enable Amazon RDS cross-Region automated backups to us-west-2 and use an automation script or CloudFormation template to restore the latest point-in-time backup during a disaster.
Convert the database to a Multi-AZ configuration and rely on automatic failover if the primary becomes unavailable.
Configure AWS Backup to copy RDS snapshots to us-west-2 once per day and restore the most recent snapshot during a disaster.
Create a cross-Region read replica in us-west-2 and promote it to standalone when the primary Region experiences an outage.

Report Issue

Answer Description

Amazon RDS cross-Region automated backups asynchronously replicate system snapshots and transaction logs to a secondary Region. Transaction logs are shipped every 5 minutes, so the latest restorable time in the destination Region typically lags the source by about 5-15 minutes-well within the 15-minute RPO. Because no standby DB instance is kept running, the only steady-state cost is for backup storage and inter-Region transfer. During a regional disaster, the team can use Infrastructure-as-Code (for example, a CloudFormation template) or an automation script to restore the most recent point-in-time backup and recreate the stack well within the 4-hour RTO.

A Multi-AZ deployment protects only against Availability Zone failures in the same Region. A cross-Region read replica meets the RPO and RTO but incurs the full cost of an additional DB instance. Copying daily snapshots with AWS Backup is inexpensive but cannot achieve a 15-minute RPO.

Ask Bash

Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.