Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 939 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03

Question #: 939
Topic #: 1

[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company uses an Amazon RDS for MySQL instance. To prepare for end-of-year processing, the company added a read replica to accommodate extra read-only queries from the company's reporting tool. The read replica CPU usage was 60% and the primary instance CPU usage was 60%.

After end-of-year activities are complete, the read replica has a constant 25% CPU usage. The primary instance still has a constant 60% CPU usage. The company wants to rightsize the database and still provide enough performance for future growth.

Which solution will meet these requirements?

A. Delete the read replica Do not make changes to the primary instance
B. Resize the read replica to a smaller instance size Do not make changes to the primary instance
C. Resize the read replica to a larger instance size Resize the primary instance to a smaller instance size
D. Delete the read replica Resize the primary instance to a larger instance

Show Suggested Answer

Suggested Answer: B 🗳️

by muhammadahmer36 at Aug. 13, 2024, 9:08 p.m.

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Oghare

Highly Voted 10 months, 2 weeks ago

Answer is B Since the read replica is now underutilized with only 25% CPU usage, it can be resized to a smaller instance to save costs while still handling the reduced read queries. No changes to the primary instance are needed, as it is consistently running at 60% CPU usage, which is manageable, and the read replica will still offload read queries in the future.

upvoted 7 times

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ln2718

Most Recent 1 week, 2 days ago

Selected Answer: B

A follow-up and you are wasting performance and money buy using option D. this looks good on paper but reality is it not. Terrible question because they try to bait you into a bad response when in reality you would never do such.

upvoted 1 times

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ln2718

1 week, 2 days ago

Selected Answer: B

and still provide enough performance for future growth

upvoted 1 times

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7dcef09

4 months ago

Selected Answer: D

Delete the read replica and resize the primary instance seems to be the right choice for this question

upvoted 1 times

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Sarayounisaldossary

4 months, 2 weeks ago

Selected Answer: D

You should remove an underused resource (read replica). Use that budget to increase primary capacity, solving the CPU load. Even though Option B is “safe” and cost-conscious, it ignores the performance needs of the primary, which is where the real issue lies. Option D is more aligned with AWS best practices and the question's goal of performance + future growth.

upvoted 2 times

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LeonSauveterre

7 months, 2 weeks ago

Selected Answer: B

Not A or D because they risk future scalability issues during traffic spikes. Moreover, when the end of next year comes, you have to bring back the deleted instance and configure it all over again. As a solutions architect, I wouldn't recommend things like that (personally).

upvoted 2 times

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Ghoneam

8 months, 1 week ago

Selected Answer: D

D. Delete the read replica Resize the primary instance to a larger instance because no need for read replica after year end still provide enough performance for future growth.

upvoted 4 times

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