DVA-C02 (Page 25)

A developer is creating an application that will give users the ability to store photos from their cellphones in the cloud.The application needs to support tens of thousands of users.The application uses an Amazon API Gateway REST API that is integrated with AWS Lambda functions to process the photos.The application stores details about the photos in Amazon DynamoDB.Users need to create an account to access the application.In the application, users must be able to upload photos and retrieve previously uploaded photos.The photos will range in size from 300 KB to 5 MB.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A developer has written code for an application and wants to share it with other developers on the team to receive feedback.The shared application code needs to be stored long-term with multiple versions and batch change tracking.Which AWS service should the developer use?Read More →

A company’s developer is building a static website to be deployed in Amazon S3 for a production environment.The website integrates with an Amazon Aurora PostgreSQL database by using an AWS Lambda function.The website that is deployed to production will use a Lambda alias that points to a specific version of the Lambda function.The company must rotate the database credentials every 2 weeks.Lambda functions that the company deployed previously must be able to use the most recent credentials.Which solution will meet these requirements?Read More →

A developer is developing an application that uses signed requests (Signature Version 4) to call other AWS services.The developer has created a canonical request, has created the string to sign, and has calculated signing information.Which methods could the developer use to complete a signed request? (Choose two.)Read More →

A developer is creating an AWS Serverless Application Model (AWS SAM) template.The AWS SAM template contains the definition of multiple AWS Lambda functions, an Amazon S3 bucket, and an Amazon CloudFront distribution.One of the Lambda functions runs on Lambda@Edge in the CloudFront distribution.The S3 bucket is configured as an origin for the CloudFront distribution.When the developer deploys the AWS SAM template in the eu-west-1 Region, the creation of the stack fails.Which of the following could be the reason for this issue?Read More →

A developer creates an AWS Lambda function that retrieves and groups data from several public API endpoints.The Lambda function has been updated and configured to connect to the private subnet of a VPC.An internet gateway is attached to the VPC.The VPC uses the default network ACL and security group configurations.The developer finds that the Lambda function can no longer access the public API.The developer has ensured that the public API is accessible, but the Lambda function cannot connect to the APIHow should the developer fix the connection issue?Read More →

A company is developing a serverless application that consists of various AWS Lambda functions behind Amazon API Gateway APIs.A developer needs to automate the deployment of Lambda function code.The developer will deploy updated Lambda functions with AWS CodeDeploy.The deployment must minimize the exposure of potential errors to end users.When the application is in production, the application cannot experience downtime outside the specified maintenance window.Which deployment configuration will meet these requirements with the LEAST deployment time?Read More →

A developer is setting up a deployment pipeline.The pipeline includes an AWS CodeBuild build stage that requires access to a database to run integration tests.The developer is using a buildspec.yml file to configure the database connection.Company policy requires automatic rotation of all database credentials.Which solution will handle the database credentials MOST securely?Read More →

A company is developing a serverless multi-tier application on AWS.The company will build the serverless logic tier by using Amazon API Gateway and AWS Lambda.While the company builds the logic tier, a developer who works on the frontend of the application must develop integration tests.The tests must cover both positive and negative scenarios, depending on success and error HTTP status codes.Which solution will meet these requirements with the LEAST effort?Read More →

A developer wants to add request validation to a production environment Amazon API Gateway API.The developer needs to test the changes before the API is deployed to the production environment.For the test, the developer will send test requests to the API through a testing tool.Which solution will meet these requirements with the LEAST operational overhead?Read More →