Developer Associate (Page 17)

A new mobile app uses Amazon Cognito web identity federation.Immediately after a user logs in, the following error occurs:AccessDenied — Not authorized to perform sts:AssumeRoleWithWebIdentityA developer determines that the Amazon Cognito configuration appears to be correct.Which of the following could be the cause of the error?Read More →

A company has multiple Amazon VPC endpoints in the same VPC.A developer needs to configure an Amazon S3 bucket policy so users can access an S3 bucket only by using these VPC endpoints.Which solution will meet these requirements?Read More →

A company built an online event platform.For each event, the company organizes quizzes and generates leaderboards that are based on the quiz scores.The company stores the leaderboard data in Amazon DynamoDB and retains the data for 30 days after an event is complete.The company then uses a scheduled job to delete the old leaderboard dataThe DynamoDB table is configured with a fixed write capacity.During the months when many events occur, the DynamoDB write API requests are throttled when the scheduled delete job runs.A developer must create a long-term solution that deletes the old leaderboard data and optimizes write throughput.Which solution meets these requirements?Read More →

A company runs an application on AWS.The application uses an AWS Lambda function that is configured with an Amazon Simple Queue Service (Amazon SQS) queue called high priority queue as the event source.A developer is updating the Lambda function with another SQS queue called low priority queue as the event source.The Lambda function must always read up to 10 simultaneous messages from the high priority queue before processing messages from low priority queue.The Lambda function must be limited to 100 simultaneous invocations.Which solution will meet these requirements?Read More →

A developer manages an Amazon RDS for PostgreSQL database.An Amazon Elastic Container Service (Amazon ECS) container that uses AWS Fargate needs to modify the contents of the database during a nightly run.Which combination of steps should the developer take to provide database access to the container in the MOST secure manner? (Choose two.)Read More →

A developer at a company recently created a serverless application to process and show data from business reports.The application’s user interface (UI) allows users to select and start processing the files.The UI displays a message when the result is available to view.The application uses AWS Step Functions with AWS Lambda functions to process the files.The developer used Amazon API Gateway and Lambda functions to create an API to support the UI.The company’s UI team reports that the request to process a file is often returning timeout errors because of the size or complexity of the files.The UI team wants the API to provide an immediate response so that the UI can display a message while the files are being processed.The backend process that is invoked by the API needs to send an email message when the report processing is complete.What should the developer do to configure the API to meet these requirements?Read More →

An application development team decides to use AWS X-Ray to monitor application code to analyze performance and perform root cause analysis.What does the team need to do to begin using X-Ray? (Choose two.)Read More →

A developer has been asked to create an AWS Lambda function that is invoked any time updates are made to items in an Amazon DynamoDB table.The function has been created, and appropriate permissions have been added to the Lambda execution role.Amazon DynamoDB streams have been enabled for the table, but the function is still not being invoked.Which option would enable DynamoDB table updates to invoke the Lambda function?Read More →

A developer is implementing a serverless application by using AWS CloudFormation to provision Amazon S3 web hosting, Amazon API Gateway, and AWS Lambda functions.The Lambda function source code is zipped and uploaded to an S3 bucket.The S3 object key of the zipped source code is specified in the Lambda resource in the CloudFormation template.The developer notices that there are no changes in the Lambda function every time the CloudFormation stack is updated.How can the developer resolve this issue?Read More →

A developer needs to deploy an application running on AWS Fargate using Amazon ECS.The application has environment variables that must be passed to a container for the application to initialize.How should the environment variables be passed to the container?Read More →