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AWS Certified Developer - Associate DVA-C02

40 Questions120 Minutes70% Passing Score▣ Updated: Sep 2026

Question 25 of 40

Single answer

A company is migrating an on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads. The company wants to refactor the code to achieve optimum read performance for queries.
Which solution will meet this requirement with LEAST current and future effort?

A

A.Use a multi-AZ Amazon RDS deployment. Increase the number of connections that the code makes to the database or increase the connection pool size if a connection pool is in use.

B

B.Use a multi-AZ Amazon RDS deployment. Modify the code so that queries access the secondary RDS instance.

C

C.Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.

D

D.Use open source replication software to create a copy of the MySQL database on an Amazon EC2 instance. Modify the application code so that queries use the IP address of the EC2 instance.

Correct Answer: A

<p>C.Deploy Amazon RDS with one or more read replicas. Modify the application code so that queries use the URL for the read replicas.</p>

Explanation

The correct answer is highlighted above. Review the wording carefully, then use the next question to continue building your understanding of AWS certification topics.

About this practice exam

Review 40 AWS questions with answers and explanations. Use the navigation to move through the exam at your own pace.