DVA-C02 (Page 8)

A developer has an application that makes batch requests directly to Amazon DynamoDB by using the BatchGetItem low-level API operation.The responses frequently return values in the UnprocessedKeys element.Which actions should the developer take to increase the resiliency of the application when the batch response includes values in UnprocessedKeys? (Choose two.)Read More →

A developer is using an AWS Lambda function to generate avatars for profile pictures that are uploaded to an Amazon S3 bucket.The Lambda function is automatically invoked for profile pictures that are saved under the /original/ S3 prefix.The developer notices that some pictures cause the Lambda function to time out.The developer wants to implement a fallback mechanism by using another Lambda function that resizes the profile picture.Which solution will meet these requirements with the LEAST development effort?Read More →

A developer has built an application that inserts data into an Amazon DynamoDB table.The table is configured to use provisioned capacity.The application is deployed on a burstable nano Amazon EC2 instance.The application logs show that the application has been failing because of a ProvisionedThroughputExceededException error.Which actions should the developer take to resolve this issue? (Choose two.)Read More →

A developer is creating a solution to track an account’s Amazon S3 buckets over time.The developer has created an AWS Lambda function that will run on a schedule.The function will list the account’s S3 buckets and will store the list in an Amazon DynamoDB table.The developer receives a permissions error when the developer runs the function with the AWSLambdaBasicExecutionRole AWS managed policy.Which combination of permissions should the developer use to resolve this error? (Choose two.)Read More →

A developer needs to deploy the code for a new application on an AWS Lambda function.The application needs a dependency file that is 500 MB to run the business logic.Which solution will meet these requirements?Read More →

A developer has built an application running on AWS Lambda using AWS Serverless Application Model (AWS SAM).What is the correct sequence of steps to successfully deploy the application?Read More →

A developer hosts a static website on Amazon S3 and connects the website to an Amazon CloudFront distribution.The website uses a custom domain name that points to the CloudFront URL.The developer has set up a continuous integration and continuous delivery (CI/CD) pipeline.The pipeline automatically runs when changes occur in an AWS CodeCommit repository.The pipeline has a source stage and then a build stage.The build stage invokes an AWS CodeBuild project that references a buildspec.yml file.The buildspec.yml file builds the code and deploys the static files to the S3 bucket.The pipeline runs successfully, and the latest website files are visible in the S3 bucket and at the S3 website URL.However, when the developer accesses the website through the CloudFront domain, the updates are not reflected on the website.What should the developer configure the buildspec.yml file to do to resolve this issue?Read More →

A company uses AWS to run its learning management system (LMS) application.The application runs on Amazon EC2 instances behind an Application Load Balancer (ALB).The application’s domain name is managed in Amazon Route 53.The application is deployed in a single AWS Region, but the company wants to improve application performance for users all over the world.Which solution will improve global performance with the LEAST operational overhead?Read More →

A developer uses Amazon S3 Event Notifications to invoke AWS Lambda functions.The Lambda functions process images after the images are uploaded to S3 buckets.The developer has set up a development S3 bucket, a production S3 bucket, a development Lambda function, and a production Lambda function in the same AWS account.The developer notices that uploads to the development S3 bucket wrongly invoke the production Lambda function.The developer must prevent development data from affecting the production Lambda function.What should the developer do to meet these requirements?Read More →

A developer is troubleshooting an application.The application includes several AWS Lambda functions that invoke an Amazon API Gateway API.The API Gateway’s method request is set up to use an Amazon Cognito authorizer for authentication.All the Lambda functions pass the user ID as part of the Authorization header to the API Gateway API.The API Gateway API returns a 403 status code for all GET requests.How should the developer resolve this issue?Read More →