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Question 400 - SOA-C02 discussion

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A company's application on EC2 instances relies on a Single-AZ RDS for MySQL DB instance. The SysOps administrator needs to ensure failover to minimize downtime.

A.

Modify the DB instance to be a Multi-AZ DB instance deployment.

Answers
A.

Modify the DB instance to be a Multi-AZ DB instance deployment.

B.

Add a read replica in the same Availability Zone where the DB instance is deployed.

Answers
B.

Add a read replica in the same Availability Zone where the DB instance is deployed.

C.

Add the DB instance to an Auto Scaling group that has a minimum capacity of 2 and a desired capacity of 2.

Answers
C.

Add the DB instance to an Auto Scaling group that has a minimum capacity of 2 and a desired capacity of 2.

D.

Use RDS Proxy to configure a proxy in front of the DB instance.

Answers
D.

Use RDS Proxy to configure a proxy in front of the DB instance.

Suggested answer: A

Explanation:

To ensure high availability and failover for RDS, converting the instance to a Multi-AZ deployment is the best practice. Multi-AZ configurations provide automated standby in a different Availability Zone, automatically failing over to the standby in case of instance or Availability Zone issues.

Modify DB instance: AWS allows for seamless conversion of an existing Single-AZ RDS instance to a Multi-AZ deployment, making it more resilient to outages without requiring significant application changes.

Failover mechanism: In Multi-AZ, failover is managed automatically by AWS, minimizing application downtime.

asked 06/11/2024
Neha Kumari
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