DOP-C02 Question 150
Select 3Your team is responsible for managing a business-critical application hosted on AWS. The application uses Amazon RDS for its database and runs in a Multi-AZ deployment for high availability. A recent business requirement mandates that the database must adhere to a strict SLA of 99.95% monthly uptime. Which of the following actions should you take to ensure compliance with the SLA?
- A
Enable enhanced monitoring on the Amazon RDS instance to track performance metrics in real-time.
- B
Configure automatic backups and test the restoration process regularly.
- C
Deploy a read replica in a different AWS Region to improve fault tolerance.
- D
Ensure that the RDS instance is deployed in a Multi-AZ configuration.
- E
Implement alarms in Amazon CloudWatch to notify the team of any instance downtime.
Show answer and explanation
Correct answers: B, D, E
Explanation
To meet the business-critical SLA of 99.95% uptime for Amazon RDS, it is crucial to focus on high availability and operational readiness. Multi-AZ deployments provide automatic failover capabilities, which are fundamental to achieving the required SLA. Configuring backups ensures data recovery in case of unexpected failures, while CloudWatch alarms allow for proactive incident management. These combined actions help maintain the required uptime and mitigate risks effectively.
- A. Incorrect.
While enhanced monitoring helps you track metrics, it does not directly contribute to meeting the SLA of 99.95%. It is useful for identifying performance bottlenecks but not for high availability.
- B. Correct.
Configuring automatic backups and regularly testing the restoration process ensures data is recoverable in the event of failure, contributing to compliance with the SLA.
- C. Incorrect.
Deploying a read replica in a different AWS Region improves read performance and cross-region fault tolerance but does not directly help you meet the SLA for the primary database instance.
- D. Correct.
A Multi-AZ deployment ensures the database has automatic failover to a standby instance in another Availability Zone, directly contributing to meeting the SLA.
- E. Correct.
Alarms in Amazon CloudWatch help identify and respond to downtime quickly, reducing the total impact of any downtime and contributing to compliance with the SLA.