SAA-C03 Question #128: Real Exam Question with Answer & Explanation

Question

A media company hosts its video processing workload on AWS. The workload uses Amazon EC2 instances in an Auto Scaling group to handle varying levels of demand. The workload stores the original videos and the processed videos in an Amazon S3 bucket. The company wants to ensure that the video processing workload is scalable. The company wants to prevent failed processing attempts because of resource constraints. The architecturemust be able to handle sudden spikes in video uploads without impacting the processing capability. Which solution will meet these requirements with the LEAST overhead?

Options

• AMigrate the workload from Amazon EC2 instances to AWS Lambda functions. Configure an
• BMigrate the workload from Amazon EC2 instances to AWS Lambda functions. Use Amazon S3 to
• CConfigure an Amazon S3 event notification to send a message to an Amazon Simple Queue
• DConfigure an Amazon S3 upload trigger to invoke an AWS Step Functions state machine when a

Explanation

This solution addresses the scalability needs of the workload while preventing failed processing attempts due to resource constraints. Amazon S3 event notificationscan be used to trigger a message to an SQS queue whenever a new video is uploaded. The existing Auto Scaling group of EC2 instances can poll the SQS queue, ensuring that the EC2 instances only process videos when there is a job in the queue. SQS decouplesthe video upload and processing steps, allowing the system to handle sudden spikes in video uploads without overloading EC2 instances. The use of Auto Scalingensures that the EC2 instances can scale in or out based on the demand, maintaining cost efficiency while avoiding processing failures due to insufficient resources.

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