AWS Certified Solutions Architect Associate · Free Practice Question Hard
Question 35
A company has developed a non-production application that is composed of multiple microservices for each of the company's business units. A single development team maintains all the microservices. The current architecture uses a static web frontend and a Java-based backend that contains the application logic. The architecture also uses a MySQL database that the company hosts on an Amazon EC2 instance. The company needs to ensure that the application is secure, scalable, and globally available while minimizing operational overhead.
Which solution will meet these requirements?
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A
Use Amazon CloudFront and Amazon S3 to host the static web frontend. Refactor the backend microservices to run on Amazon ECS on AWS Fargate. Migrate the database to Amazon DynamoDB for auto-scaling and cost optimization.
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B
Use Amazon CloudFront and Amazon S3 to host the static web frontend. Refactor the backend to use AWS Lambda functions that are invoked by Amazon API Gateway. Migrate the database to Amazon Aurora Serverless for auto-scaling.
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C
Use Amazon CloudFront and AWS Amplify to host the static web frontend. Refactor the backend to AWS Lambda functions triggered by an EventBridge bus. Migrate the database to an Amazon EC2 Reserved Instance with backups configured on Amazon S3.
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D
Use AWS Amplify to host the static web frontend. Refactor the backend microservices to Amazon Elastic Kubernetes Service (Amazon EKS) with auto-scaling. Migrate the database to Amazon RDS for MySQL with a read replica for high availability.
Reveal correct answer
Correct answer: B
Explanation
Use Amazon CloudFront and Amazon S3 to host the static web frontend. Refactor the backend to use AWS Lambda functions that are invoked by Amazon API Gateway. Migrate the database to Amazon Aurora Serverless for auto-scaling:
This is correct because S3 and CloudFront provide secure, globally available hosting for the static frontend. AWS Lambda and API Gateway eliminate server management, and Aurora Serverless offers a cost-effective, auto-scaling database solution.
Use AWS Amplify to host the static web frontend. Refactor the backend microservices to Amazon Elastic Kubernetes Service (Amazon EKS) with auto-scaling. Migrate the database to Amazon RDS for MySQL with a read replica for high availability:
This is incorrect because using Amazon EKS adds operational complexity. Amplify is better suited for modern full-stack applications, not static web hosting.
Use Amazon CloudFront and Amazon S3 to host the static web frontend. Refactor the backend microservices to run on Amazon ECS on AWS Fargate. Migrate the database to Amazon DynamoDB for auto-scaling and cost optimization:
This is incorrect because moving a relational database to DynamoDB requires a complete redesign, which increases migration complexity and effort.
Use Amazon CloudFront and AWS Amplify to host the static web frontend. Refactor the backend to AWS Lambda functions triggered by an EventBridge bus. Migrate the database to an Amazon EC2 Reserved Instance with backups configured on Amazon S3:
This is incorrect because EventBridge adds unnecessary complexity to trigger Lambda functions. Hosting a database on an EC2 Reserved Instance increases operational overhead compared to managed database services.
References:
Discussion
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