DVA-C02 (Page 33)

A company caches session information for a web application in an Amazon DynamoDB table.The company wants an automated way to delete old items from the table.What is the simplest way to do this?Read More →

A company’s new mobile app uses Amazon API Gateway.As the development team completes a new release of its APIs, a developer must safely and transparently roll out the API change.What is the SIMPLEST solution for the developer to use for rolling out the new API version to a limited number of users through API Gateway?Read More →

A company has a web application that is deployed on AWS.The application uses an Amazon API Gateway API and an AWS Lambda function as its backend.The application recently demonstrated unexpected behavior.A developer examines the Lambda function code, finds an error, and modifies the code to resolve the problem.Before deploying the change to production, the developer needs to run tests to validate that the application operates properly.The application has only a production environment available.The developer must create a new development environment to test the code changes.The developer must also prevent other developers from overwriting these changes during the test cycle.Which combination of steps will meet these requirements with the LEAST development effort? (Choose two.)Read More →

A developer has created an AWS Lambda function to provide notification through Amazon Simple Notification Service (Amazon SNS) whenever a file is uploaded to Amazon S3 that is larger than 50 MB.The developer has deployed and tested the Lambda function by using the CLI.However, when the event notification is added to the S3 bucket and a 3,000 MB file is uploaded, the Lambda function does not launch.Which of the following is a possible reason for the Lambda function’s inability to launch?Read More →

A company is planning to use AWS CodeDeploy to deploy an application to Amazon Elastic Container Service (Amazon ECS).During the deployment of a new version of the application, the company initially must expose only 10% of live traffic to the new version of the deployed application.Then, after 15 minutes elapse, the company must route all the remaining live traffic to the new version of the deployed application.Which CodeDeploy predefined configuration will meet these requirements?Read More →

A developer wants to debug an application by searching and filtering log data.The application logs are stored in Amazon CloudWatch Logs.The developer creates a new metric filter to count exceptions in the application logs.However, no results are returned from the logs.What is the reason that no filtered results are being returned?Read More →

A company is planning to deploy an application on AWS behind an Elastic Load Balancer.The application uses an HTTP/HTTPS listener and must access the client IP addresses.Which load-balancing solution meets these requirements?Read More →

An application under development is required to store hundreds of video files.The data must be encrypted within the application prior to storage, with a unique key for each video file.How should the developer code the application?Read More →

A developer deployed an application to an Amazon EC2 instance.The application needs to know the public IPv4 address of the instance.How can the application find this information?Read More →

A company runs an application on AWS.The company deployed the application on Amazon EC2 instances.The application stores data on Amazon Aurora.The application recently logged multiple application-specific custom DECRYP_ERROR errors to Amazon CloudWatch logs.The company did not detect the issue until the automated tests that run every 30 minutes failed.A developer must implement a solution that will monitor for the custom errors and alert a development team in real time when these errors occur in the production environment.Which solution will meet these requirements with the LEAST operational overhead?Read More →