Developer Associate (Page 63)

A developer is building an application that will use an Amazon API Gateway API with an AWS Lambda backend.The team that will develop the frontend requires immediate access to the API endpoints to build the UI.To prepare the backend application for integration, the developer needs to set up endpoints.The endpoints need to return predefined HTTP status codes and JSON responses for the frontend team.The developer creates a method for an API resource.Which solution will meet these requirements?Read More →

A developer is building a serverless application that runs on AWS.The developer wants to create an accelerated development workflow that deploys incremental changes to AWS for testing.The developer wants to deploy the incremental changes but does not want to fully deploy the entire application to AWS for every code commit.What should the developer do to meet these requirements?Read More →

A company runs a batch processing application by using AWS Lambda functions and Amazon API Gateway APIs with deployment stages for development, user acceptance testing, and production.A development team needs to configure the APIs in the deployment stages to connect to third-party service endpoints.Which solution will meet this requirement?Read More →

A company’s developer is creating an application that uses Amazon API Gateway.The company wants to ensure that only users in the Sales department can use the application.The users authenticate to the application by using federated credentials from a third-party identity provider (IdP) through Amazon Cognito.The developer has set up an attribute mapping to map an attribute that is named Department and to pass the attribute to a custom AWS Lambda authorizer.To test the access limitation, the developer sets their department to Engineering in the IdP and attempts to log in to the application.The developer is denied access.The developer then updates their department to Sales in the IdP and attempts to log in.Again, the developer is denied access.The developer checks the logs and discovers that access is being denied because the developer’s access token has a department value of Engineering.Which of the following is a possible reason that the developer’s department is still being reported as Engineering instead of Sales?Read More →

A developer has created a data collection application that uses Amazon API Gateway, AWS Lambda, and Amazon S3.The application’s users periodically upload data files and wait for the validation status to be reflected on a processing dashboard.The validation process is complex and time-consuming for large files.Some users are uploading dozens of large files and have to wait and refresh the processing dashboard to see if the files have been validated.The developer must refactor the application to immediately update the validation result on the user’s dashboard without reloading the full dashboard.What is the MOST operationally efficient solution that meets these requirements?Read More →

A company uses AWS CloudFormation to deploy an application that uses an Amazon API Gateway REST API with AWS Lambda function integration.The application uses Amazon DynamoDB for data persistence.The application has three stages: development, testing, and production.Each stage uses its own DynamoDB table.The company has encountered unexpected issues when promoting changes to the production stage.The changes were successful in the development and testing stages.A developer needs to route 20% of the traffic to the new production stage API with the next production release.The developer needs to route the remaining 80% of the traffic to the existing production stage.The solution must minimize the number of errors that any single customer experiences.Which approach should the developer take to meet these requirements?Read More →

An online sales company is developing a serverless application that runs on AWS.The application uses an AWS Lambda function that calculates order success rates and stores the data in an Amazon DynamoDB table.A developer wants an efficient way to invoke the Lambda function every 15 minutes.Which solution will meet this requirement with the LEAST development effort?Read More →

A developer designed an application on an Amazon EC2 instance.The application makes API requests to objects in an Amazon S3 bucket.Which combination of steps will ensure that the application makes the API requests in the MOST secure manner? (Choose two.)Read More →

A developer creates a static website for their department.The developer deploys the static assets for the website to an Amazon S3 bucket and serves the assets with Amazon CloudFront.The developer uses origin access control (OAC) on the CloudFront distribution to access the S3 bucket.The developer notices users can access the root URL and specific pages but cannot access directories without specifying a file name.For example, /products/index.html works, but /products/ returns an error.The developer needs to enable accessing directories without specifying a file name without exposing the S3 bucket publicly.Which solution will meet these requirements?Read More →

A developer is working on an application that processes operating data from IoT devices.Each IoT device uploads a data file once every hour to an Amazon S3 bucket.The developer wants to immediately process each data file when the data file is uploaded to Amazon S3.The developer will use an AWS Lambda function to process the data files from Amazon S3.The Lambda function is configured with the S3 bucket information where the files are uploaded.The developer wants to configure the Lambda function to immediately invoke after each data file is uploaded.Which solution will meet these requirements?Read More →