AWS Certified Solutions Architect – Associate (SAA-C03) — Question 225
A solutions architect observes that a nightly batch processing job is automatically scaled up for 1 hour before the desired Amazon EC2 capacity is reached. The peak capacity is the ‘same every night and the batch jobs always start at 1 AM. The solutions architect needs to find a cost-effective solution that will allow for the desired EC2 capacity to be reached quickly and allow the Auto Scaling group to scale down after the batch jobs are complete.
What should the solutions architect do to meet these requirements?
Answer options
- A. Increase the minimum capacity for the Auto Scaling group.
- B. Increase the maximum capacity for the Auto Scaling group.
- C. Configure scheduled scaling to scale up to the desired compute level.
- D. Change the scaling policy to add more EC2 instances during each scaling operation.
Correct answer: C
Explanation
The correct answer is C because configuring scheduled scaling allows the Auto Scaling group to preemptively scale up to the desired capacity right before the batch jobs start, ensuring timely availability of resources. Options A and B do not address the timing of scaling effectively, while D may lead to inefficient scaling and increased costs without ensuring the promptness needed for the batch jobs.