Question #870

试题更新时间: 2023-11-07 12:59:45

A media production company wants to deliver high-definition raw video for preproduction and dubbing to customer all around the world. They would like to use Amazon CloudFront for their scenario, and they require the ability to limit downloads per customer and video file to a configurable number. A CloudFront download distribution with TTL=0 was already setup to make sure all client HTTP requests hit an authentication backend on Amazon Elastic Compute Cloud (EC2)/Amazon RDS first, which is responsible for restricting the number of downloads. Content is stored in S3 and configured to be accessible only via CloudFront. What else needs to be done to achieve an architecture that meets the requirements? Choose 2 answers

A. Enable URL parameter forwarding, let the authentication backend count the number of downloads per customer in RDS, and return the content of S3 URL unless the download limit is reached.

B. Enable CloudFront logging into an S3 bucket, leverage EMR to analyze CloudFront logs to determine the number of downloads per customer, and return the content S3 URL unless the download limit is reached.

C. Enable URL parameter forwarding, let the authentication backend count the number of downloads per customer in RDS, and invalidate the CloudFront distribution as soon as the download limit is reached.

D. Enable CloudFront logging into the S3 bucket, let the authentication backend determine the number of downloads per customer by parsing those logs, and return the content S3 URL unless the download limit is reached.

E. Configure a list of trusted signers, let the authentication backend count the number of download requests per customer in RDS, and return a dynamically signed URL unless the download limit is reached.

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