DVA-C02 (Page 13)

A developer is building a serverless application that connects to an Amazon Aurora PostgreSQL database.The serverless application consists of hundreds of AWS Lambda functions.During every Lambda function scale out, a new database connection is made that increases database resource consumption.The developer needs to decrease the number of connections made to the database.The solution must not impact the scalability of the Lambda functions.Which solution will meet these requirements?Read More →

A developer must provide an API key to an AWS Lambda function to authenticate with a third-party system.The Lambda function will run on a schedule.The developer needs to ensure that the API key remains encrypted at rest.Which solution will meet these requirements?Read More →

A developer is creating a new REST API by using Amazon API Gateway and AWS Lambda.The development team tests the API and validates responses for the known use cases before deploying the API to the production environment.The developer wants to make the REST API available for testing by using API Gateway locally.Which AWS Serverless Application Model Command Line Interface (AWS SAM CLI) subcommand will meet these requirements?Read More →

A developer has created an AWS Lambda function that makes queries to an Amazon Aurora MySQL DB instance.When the developer performs a test, the DB instance shows an error for too many connections.Which solution will meet these requirements with the LEAST operational effort?Read More →

A company built a new application in the AWS Cloud.The company automated the bootstrapping of new resources with an Auto Scaling group by using AWS CloudFormation templates.The bootstrap scripts contain sensitive data.The company needs a solution that is integrated with CloudFormation to manage the sensitive data in the bootstrap scripts.Which solution will meet these requirements in the MOST secure way?Read More →

A developer is creating a mobile application that will not require users to log in.What is the MOST efficient method to grant users access to AWS resources?Read More →

A company is migrating its PostgreSQL database into the AWS Cloud.The company wants to use a database that will secure and regularly rotate database credentials.The company wants a solution that does not require additional programming overhead.Which solution will meet these requirements?Read More →

A developer is testing an application that invokes an AWS Lambda function asynchronously.During the testing phase, the Lambda function fails to process after two retries.How can the developer troubleshoot the failure?Read More →

A company needs to distribute firmware updates to its customers around the world.Which service will allow easy and secure control of the access to the downloads at the lowest cost?Read More →

A company has an ecommerce application.To track product reviews, the company’s development team uses an Amazon DynamoDB table.Every record includes the following:• A Review ID, a 16-digit universally unique identifier (UUID)• A Product ID and User ID, 16-digit UUIDs that reference other tables• A Product Rating on a scale of 1-5• An optional comment from the userThe table partition key is the Review ID.The most performed query against the table is to find the 10 reviews with the highest rating for a given product.Which index will provide the FASTEST response for this query?Read More →