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Question 478 - SAA-C03 discussion

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A company moved its on-premises PostgreSQL database to an Amazon RDS for PostgreSQL DB instance. The company successfully launched a new product. The workload on the database has increased.

The company wants to accommodate the larger workload without adding infrastructure.

Which solution will meet these requirements MOST cost-effectively?

A.
Buy reserved DB instances for the total workload. Make the Amazon RDS for PostgreSQL DB instance larger.
Answers
A.
Buy reserved DB instances for the total workload. Make the Amazon RDS for PostgreSQL DB instance larger.
B.
Make the Amazon RDS for PostgreSQL DB instance a Multi-AZ DB instance.
Answers
B.
Make the Amazon RDS for PostgreSQL DB instance a Multi-AZ DB instance.
C.
Buy reserved DB instances for the total workload. Add another Amazon RDS for PostgreSQL DB instance.
Answers
C.
Buy reserved DB instances for the total workload. Add another Amazon RDS for PostgreSQL DB instance.
D.
Make the Amazon RDS for PostgreSQL DB instance an on-demand DB instance.
Answers
D.
Make the Amazon RDS for PostgreSQL DB instance an on-demand DB instance.
Suggested answer: A

Explanation:

This answer is correct because it meets the requirements of accommodating the larger workload without adding infrastructure and minimizing the cost. Reserved DB instances are a billing discount applied to the use of certain on-demand DB instances in your account. Reserved DB instances provide you with a significant discount compared to on-demand DB instance pricing. You can buy reserved DB instances for the total workload and choose between three payment options: No Upfront, Partial Upfront, or All Upfront. You can make the Amazon RDS for PostgreSQL DB instance larger by modifying its instance type to a higher performance class. This way, you can increase the CPU, memory, and network capacity of your DB instance and handle the increased workload.

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithReservedDBInstances.html

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.DBInstanceClass.html

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asked 16/09/2024
Henrik Persson
34 questions
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