Câu 35: AWS Certified Developer - Associate DVA-C02(New)

A developer is creating a mobile app that calls a backend service by using an Amazon API Gateway REST API. For integration testing during the development phase, the developer wants to simulate different backend responses without invoking the backend service. Which solution will meet these requirements with the LEAST operational overhead?

1. A. Create an AWS Lambda function. Use API Gateway proxy integration to return constant HTTP responses.
2. B. Create an Amazon EC2 instance that serves the backend REST API by using an AWS CloudFormation template.
3. C. Customize the API Gateway stage to select a response type based on the request.
4. D. Use a request mapping template to select the mock integration response. — đáp án hiện tại