Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 579 discussion

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

Question #: 579
Topic #: 1

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

A company runs an application that uses Amazon RDS for PostgreSQL. The application receives traffic only on weekdays during business hours. The company wants to optimize costs and reduce operational overhead based on this usage.

Which solution will meet these requirements?

A. Use the Instance Scheduler on AWS to configure start and stop schedules.
B. Turn off automatic backups. Create weekly manual snapshots of the database.
C. Create a custom AWS Lambda function to start and stop the database based on minimum CPU utilization.
D. Purchase All Upfront reserved DB instances.

Show Suggested Answer

Suggested Answer: A 🗳️

by luiscc at July 31, 2023, 6:40 p.m.

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potomac

Highly Voted 1 year, 3 months ago

Selected Answer: A

The Instance Scheduler on AWS solution automates the starting and stopping of Amazon Elastic Compute Cloud (Amazon EC2) and Amazon Relational Database Service (Amazon RDS) instances. This solution helps reduce operational costs by stopping resources that are not in use and starting them when they are needed. The cost savings can be significant if you leave all of your instances running at full utilization continuously. https://aws.amazon.com/solutions/implementations/instance-scheduler-on-aws/

upvoted 6 times

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pentium75

Most Recent 1 year, 1 month ago

Selected Answer: A

B increases operational overhead C Lambda functions could work but NOT "based on minimum CPU utilization" D might save cost but not as much as A

upvoted 4 times

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ibu007

1 year, 5 months ago

Selected Answer: A

A. Use the Instance Scheduler on AWS to configure start and stop schedules

upvoted 4 times

baba365

1 year, 4 months ago

Why not D?

upvoted 3 times

AndreiWebNet

1 year, 2 months ago

How do you actually reduce costs enough to buy upfront instances that you pay for them if you use them 1 h or 24 and it is payed to run 24h. It says that you use this instances 8 hours a day 5 days a week, totaling 40h a week.... so is it the difference from 40h to 168 h?

upvoted 3 times

master9

1 year, 2 months ago

When you buy Reserved Instances, the larger the upfront payment, the greater the discount. To maximize your savings, you can pay all up-front and receive the largest discount. Partial up-front RI's offer lower discounts but give you the option to spend less up front. Lastly, you can choose to spend nothing up front and receive a smaller discount, but allowing you to free up capital to spend in other projects. But you need some mechanism to stop on weekend and in night to save cost.

upvoted 2 times

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ErnShm

1 year, 5 months ago

A https://docs.aws.amazon.com/solutions/latest/instance-scheduler-on-aws/solution-overview.html

upvoted 3 times

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Guru4Cloud

1 year, 6 months ago

Selected Answer: A

Purpose-built scheduling minimizes operational overhead. Aligns instance running time precisely with business hour demands. Maintains backups unlike disabling auto backups. More cost effective and flexible than reserved instances. Simpler to implement than a custom Lambda function.

upvoted 4 times

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