SAP-C02 Question #769: Real Exam Question with Answer & Explanation

Question

An entertainment company hosts a ticketing service on a fleet of Linux Amazon EC2 instances that are in an Auto Scaling group. The ticketing service uses a pricing file. The pricing file is stored in an Amazon S3 bucket that has S3 Standard storage. A central pricing solution that is hosted by a third party updates the pricing file. The pricing file is updated every 1-15 minutes and has several thousand line items. The pricing file is downloaded to each EC2 instance when the instance launches. The EC2 instances occasionally use outdated pricing information that can result in incorrect charges for customers. Which solution will resolve this problem MOST cost-effectively?

Options

• ACreate an AWS Lambda function to update an Amazon DynamoDB table with new prices each
• BCreate an AWS Lambda function to update an Amazon Elastic File System (Amazon EFS) file
• CLoad Mountpoint for Amazon S3 onto the AMI of the EC2 instances. Configure Mountpoint for
• DCreate an Amazon Elastic Block Store (Amazon EBS) volume. Use EBS Multi-Attach to attach

Explanation

Mountpoint for Amazon S3: This solution allows the EC2 instances to directly access the S3 bucket as if it were a local file system. This ensures that the instances always access the latest version of the pricing file without having to download it each time. Cost-Effective: This approach avoids the need to constantly download and store the file on each instance, which can save on both S3 GET requests and local storage costs. Simplicity: By mounting the S3 bucket, you ensure that all instances are using the most current file without additional logic or processes to manage file updates.

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