SAP-C02 · Question #460
A company runs a web application on AWS. The web application delivers static content from an Amazon S3 bucket that is behind an Amazon CloudFront distribution. The application serves dynamic content b
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Question
A company runs a web application on AWS. The web application delivers static content from an Amazon S3 bucket that is behind an Amazon CloudFront distribution. The application serves dynamic content by using an Application Load Balancer (ALB) that distributes requests to a fleet of Amazon EC2 instances in Auto Scaling groups. The application uses a domain name setup in Amazon Route 53. Some users reported occasional issues when the users attempted to access the website during peak hours. An operations team found that the ALB sometimes returned HTTP 503 Service Unavailable errors. The company wants to display a custom error message page when these errors occur. The page should be displayed immediately for this error code. Which solution will meet these requirements with the LEAST operational overhead?
Options
- ASet up a Route 53 failover routing policy. Configure a health check to determine the status of the
- BCreate a second CloudFront distribution and an S3 static website to host the custom error page.
- CCreate a CloudFront origin group that has two origins. Set the ALB endpoint as the primary origin.
- DCreate a CloudFront function that validates each HTTP response code that the ALB returns.
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