DVA-C02 (Page 23)

A developer is building a serverless application by using AWS Serverless Application Model (AWS SAM) on multiple AWS Lambda functions.When the application is deployed, the developer wants to shift 10% of the traffic to the new deployment of the application for the first 10 minutes after deployment.If there are no issues, all traffic must switch over to the new version.Which change to the AWS SAM template will meet these requirements?Read More →

A developer is writing an application to encrypt files outside of AWS before uploading the files to an Amazon S3 bucket.The encryption must be symmetric and must be performed inside the application.How can the developer implement the encryption in the application to meet these requirements?Read More →

A company has an AWS Lambda function that processes incoming requests from an Amazon API Gateway API.The API calls the Lambda function by using a Lambda alias.A developer updated the Lambda function code to handle more details related to the incoming requests.The developer wants to deploy the new Lambda function for more testing by other developers with no impact to customers that use the API.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A developer has designed an application to store incoming data as JSON files in Amazon S3 objects.Custom business logic in an AWS Lambda function then transforms the objects, and the Lambda function loads the data into an Amazon DynamoDB table.Recently, the workload has experienced sudden and significant changes in traffic.The flow of data to the DynamoDB table is becoming throttled.The developer needs to implement a solution to eliminate the throttling and load the data into the DynamoDB table more consistently.Which solution will meet these requirements?Read More →

A developer is creating an application.New users of the application must be able to create an account and register by using their own social media accounts.Which AWS service or resource should the developer use to meet these requirements?Read More →

A developer needs to manage AWS infrastructure as code and must be able to deploy multiple identical copies of the infrastructure, stage changes, and revert to previous versions.Which approach addresses these requirements?Read More →

A company uses Amazon DynamoDB as a data store for its order management system.The company frontend application stores orders in a DynamoDB table.The DynamoDB table is configured to send change events to a DynamoDB stream.The company uses an AWS Lambda function to log and process the incoming orders based on data from the DynamoDB stream.An operational review reveals that the order quantity of incoming orders is sometimes set to 0.A developer needs to create a dashboard that will show how many unique customers this problem affects each day.What should the developer do to implement the dashboard?Read More →

A developer is implementing an AWS Cloud Development Kit (AWS CDK) serverless application.The developer will provision several AWS Lambda functions and Amazon API Gateway APIs during AWS CloudFormation stack creation.The developer’s workstation has the AWS Serverless Application Model (AWS SAM) and the AWS CDK installed locally.How can the developer test a specific Lambda function locally?Read More →

A developer is creating a Ruby application and needs to automate the deployment, scaling, and management of an environment without requiring knowledge of the underlying infrastructure.Which service would best accomplish this task?Read More →

A company has an ecommerce web application that uses an on-premises MySQL database as a data store.The company migrates the on-premises MySQL database to Amazon RDS for MySQL.A developer needs to configure the application’s access to the RDS for MySQL database.The developer’s solution must not use long term credentials.Which solution will meet these requirements?Read More →