SAA-C03 Question #464: Real Exam Question with Answer & Explanation

Question

A company has a batch processing application that runs every day. The process typically takes an average 3 hours to complete. The application can handle interruptions and can resume the process after a restart. Currently, the company runs the application on Amazon EC2 On-Demand Instances. The company wants to optimize costs while maintaining the same performance level. Which solution will meet these requirements MOST cost-effectively?

Options

• APurchase a 1-year EC2 Instance Savings Plan for the appropriate instance family and size to
• BUse EC2 On-Demand Capacity Reservations based on the appropriate instance family and size
• CDetermine the appropriate instance family and size to meet the requirements of the application.
• DDetermine the appropriate instance family and size to meet the requirements of the application.

Explanation

Since the workload is interruptible and can resume after restarts, Amazon EC2 Spot Instances are the most cost-effective option, offering savings of up to 90% compared to On-Demand. Running the batch workload on AWS Batch with Spot Instances allows automatic job queue management, interruption handling, and scheduling. Option A and C reduce cost but still rely on reserved or committed pricing for On-Demand capacity. Option B (Capacity Reservations) increases cost instead of reducing it. Therefore, the most cost-optimized solution is D - AWS Batch with EC2 Spot Instances.

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