DVA-C01 (Page 10)

A developer has created a Java application that runs on AWS Elastic Beanstalk with the default Elastic Beanstalk instance profile.The developer needs to visualize a map of the application’s interactions with AWS services to help identify and debug issues with the application.Which combination of steps should the developer take to meet this requirement with the LEAST operational effort? (Choose two.)Read More →

A company is running a web application that is using Amazon Cognito for authentication.The company does not want to use multi-factor authentication (MFA) for all the visitors every time, but the company’s security team has concerns about compromised credentials.The development team needs to configure mandatoryMFA only when suspicious sign-in attempts are detected.Which Amazon Cognito feature will meet these requirements?Read More →

An ecommerce company is launching a new application that will be publicly accessible.The company deployed the application on Amazon EC2 instances behind an Application Load Balancer (ALB) in the us-east-1 Region.The EC2 instances are in an Auto Scaling group.A developer needs to make the application secure by using TLS/SSL certificates provisioned by AWS.The developer also needs to configure the existing domain www.example.com in Amazon Route 53.Which combination of steps should the developer take to meet these requirements? (Choose two.)Read More →

A company has a web application that contains an Amazon API Gateway REST API.A developer has created an AWS CloudFormation template for the initial deployment of the application.The developer has deployed the application successfully as part of an AWS CodePipeline continuous integration and continuous delivery (CI/CD) process.All resources and methods are available through the deployed stage endpoint.The CloudFormation template contains the following resource types:• AWS::ApiGateway::RestApi• AWS::ApiGateway::Resource• AWS::ApiGateway::Method• AWS::ApiGateway::Stage• AWS::ApiGateway::DeploymentThe developer adds a new resource to the REST API with additional methods and redeploys the template.CloudFormation reports that the deployment is successful and that the stack is in the UPDATE_COMPLETE state.However, calls to all new methods are returning 404 (Not Found) errors.What should the developer do to make the new methods available?Read More →

A company wants to migrate applications from its on-premises servers to AWS.As a first step, the company is modifying and migrating a non-critical application to a single Amazon EC2 instance.The application will store information in an Amazon S3 bucket.The company needs to follow security best practices when deploying the application on AWS.Which approach should the company take to allow the application to interact with Amazon S3?Read More →

A developer runs an application that uses an Amazon API Gateway REST API.The developer needs to implement a solution to proactively monitor the health of both API responses and latencies in case a deployment causes a service disruption despite passing deployment pipeline tests.The solution also must check for endpoint vulnerability and unauthorized changes to APIs, URLs, and website content.Which solution will meet these requirements?Read More →

A developer creates an AWS Lambda function that publishes a message to an Amazon Simple Queue Service (Amazon SQS) queue.The developer needs to ensure that the message is not processed for 60 seconds after delivery to the destination queue.Which solution will meet these requirements?Read More →

A developer is building a web application that uses Amazon API Gateway to expose an AWS Lambda function to process requests from clients.During testing, the developer notices that the API Gateway times out even though the Lambda function finishes under the set time limit.Which of the following API Gateway metrics in Amazon CloudWatch can help the developer troubleshoot the issue? (Choose two.)Read More →

A company is using Amazon Cognito user pools for sign-up and login functionality for a web application.The company is using Amazon RDS for the application’s data persistence and is using Amazon API Gateway and AWS Lambda for the application’s API functionality.Users must provide their first name, last name, email address, and phone number to sign up.All API endpoints have a Cognito user pool authorizer to guard against unauthenticated requests.A developer wants to show a personalized welcome screen to users after they log in.The welcome screen needs to show the user’s first name and the user’s previous login date.According to company policy, developers who work on the web application cannot store any personally identifiable information in RDS instances.Which solution should the developer implement to meet these requirements?Read More →

A company is using an Amazon API Gateway REST API endpoint as a webhook to publish events from an on-premises source control management (SCM) system to Amazon EventBridge (Amazon CloudWatch Events).The company has configured an EventBridge (CloudWatch Events) rule to listen for the events and to control application deployment in a central AWS account.The company needs to receive the same events across multiple receiver AWS accounts.How can a developer meet these requirements without changing the configuration of the SCM system?Read More →