DVA-C02 (Page 39)

A developer is designing a serverless application for a game in which users register and log in through a web browser.The application makes requests on behalf of users to a set of AWS Lambda functions that run behind an Amazon API Gateway HTTP API.The developer needs to implement a solution to register and log in users on the application’s sign-in page.The solution must minimize operational overhead and must minimize ongoing management of user identities.Which solution will meet these requirements?Read More →

A developer supports an application that accesses data in an Amazon DynamoDB table.One of the item attributes is expirationDate in the timestamp format.The application uses this attribute to find items, archive them, and remove them from the table based on the timestamp value.The application will be decommissioned soon, and the developer must find another way to implement this functionality.The developer needs a solution that will require the least amount of code to write.Which solution will meet these requirements?Read More →

A company is building an application on AWS.The application’s backend includes an Amazon API Gateway REST API.The company’s frontend application developers cannot continue work until the backend API is ready for integration.The company needs a solution that will allow the frontend application developers to continue their work.Which solution will meet these requirements in the MOST operationally efficient way?Read More →

An Amazon Simple Queue Service (Amazon SQS) queue serves as an event source for an AWS Lambda function.In the SQS queue, each item corresponds to a video file that the Lambda function must convert to a smaller resolution.The Lambda function is timing out on longer video files, but the Lambda function’s timeout is already configured to its maximum value.What should a developer do to avoid the timeouts without additional code changes?Read More →

A company notices that credentials that the company uses to connect to an external software as a service (SaaS) vendor are stored in a configuration file as plaintext.The developer needs to secure the API credentials and enforce automatic credentials rotation on a quarterly basis.Which solution will meet these requirements MOST securely?Read More →

A developer is optimizing an AWS Lambda function and wants to test the changes in production on a small percentage of all traffic.The Lambda function serves requests to a RE ST API in Amazon API Gateway.The developer needs to deploy their changes and perform a test in production without changing the API Gateway URL.Which solution will meet these requirements?Read More →

A developer is updating the production version of an AWS Lambda function to fix a defect.The developer has tested the updated code in a test environment.The developer wants to slowly roll out the updates to a small subset of production users before rolling out the changes to all users.Only 10% of the users should be initially exposed to the new code in production.Which solution will meet these requirements?Read More →

A company is building a compute-intensive application that will run on a fleet of Amazon EC2 instances.The application uses attached Amazon Elastic Block Store (Amazon EBS) volumes for storing data.The Amazon EBS volumes will be created at time of initial deployment.The application will process sensitive information.All of the data must be encrypted.The solution should not impact the application’s performance.Which solution will meet these requirements?Read More →

An application that runs on AWS receives messages from an Amazon Simple Queue Service (Amazon SQS) queue and processes the messages in batches.The application sends the data to another SQS queue to be consumed by another legacy application.The legacy system can take up to 5 minutes to process some transaction data.A developer wants to ensure that there are no out-of-order updates in the legacy system.The developer cannot alter the behavior of the legacy system.Which solution will meet these requirements?Read More →

A company is building a new application that runs on AWS and uses Amazon API Gateway to expose APIs.Teams of developers are working on separate components of the application in parallel.The company wants to publish an API without an integrated backend so that teams that depend on the application backend can continue the development work before the API backend development is complete.Which solution will meet these requirements?Read More →