DBS-C01 Management and Operations Practice Question
A company is running an Amazon RDS for MySQL Multi-AZ DB instance. The company wants to implement a backup strategy that meets a recovery point objective (RPO) of 5 minutes and a recovery time objective (RTO) of 1 hour. Which THREE steps should the company take to meet these objectives?
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
✓
Configure AWS Backup to copy automated backups to another region.
Automated backups with a 35-day retention period (B) enable point-in-time recovery within the last 35 days, supporting an RPO of 5 minutes. Configuring AWS Backup to copy automated backups to another region (A) provides cross-region disaster recovery, helping meet the RTO of 1 hour by restoring in a different region. Creating a cross-region read replica (D) allows for quick failover by promoting the replica, which can significantly reduce RTO. Option C (Single-AZ) is less resilient and does not help meet RPO/RTO. Option E (daily manual snapshots) cannot achieve a 5-minute RPO due to manual timing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure AWS Backup to copy automated backups to another region.
Why this is correct
AWS Backup can copy backups cross-region for disaster recovery.
- ✓
Enable automated backups with a retention period of 35 days.
Why this is correct
Automated backups allow point-in-time recovery within 5 minutes.
- ✗
Change the DB instance to a Single-AZ configuration to reduce costs.
Why it's wrong here
Single-AZ does not provide the same resilience as Multi-AZ and may increase recovery time.
- ✓
Create a cross-region read replica to use for failover in another region.
Why this is correct
A read replica can be promoted quickly, meeting the 1-hour RTO.
- ✗
Take daily manual snapshots and copy them to another region.
Why it's wrong here
Daily snapshots do not meet the 5-minute RPO.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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