DVA-C01 (Page 28)

A current architecture uses many Lambda functions invoking one another as a large state machine.The coordination of this state machine is legacy custom code that breaks easily.Which AWS Service can help refactor and manage the state machine?Read More →

A developer is using AWS CodeDeploy to automate a company’s application deployments to Amazon EC2.Which application specification file properties are required to ensure the software deployments do not fail? (Choose two.)Read More →

An ecommerce application is running behind an Application Load Balancer.A developer observes some unexpected load on the application during non-peak hours.The developer wants to analyze patterns for the client IP addresses that use the application.Which HTTP header should the developer use for this analysis?Read More →

A company is planning to use AWS CodeDeploy to deploy an application to AWS Lambda.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, every 10 minutes, the company must route another10% of live traffic to the new version of the deployed application until all live traffic is routed to the new version.Which CodeDeploy predefined configuration will meet these requirements?Read More →

A developer has created a REST API using Amazon API Gateway.The developer wants to log who and how each caller accesses the API.The developer also wants to control how long the logs are kept.What should the developer do to meet these requirements?Read More →

A developer is designing a full-stack serverless application.Files for the website are stored in an Amazon S3 bucket.AWS Lambda functions that use AmazonAPI Gateway endpoints return results from an Amazon DynamoDB table.The developer must create a solution that securely provides registration and authentication for the application while minimizing the amount of configuration.Which solution meets these requirements?Read More →

A banking application processes thousands of transactions each second.Each transaction payload must have end-to-end encryption.The application encrypts each transaction locally by using the AWS Key Management Service (AWS KMS) GenerateDataKey operation.A developer is testing the application and receives a ThrottlingException error.Which actions are best practices to resolve this error? (Choose two.)Read More →

An ecommerce company wants to redirect users to a country-specific website when they enter the example.com website.For example, the company wants to redirect United States users to example.com/us/ and wants to redirect French users to example.com/fr/.The web application is using Amazon CloudFront and anApplication Load Balancer with an Amazon Elastic Container Service (Amazon ECS) cluster.The application’s domain name resolution is configured in anAmazon Route 53 public hosted zone.Which solution will meet these requirements with the LEAST operational effort?Read More →

A development team uses AWS Elastic Beanstalk for application deployment.The development team has configured the application version lifecycle policy to limit the number of application versions to 25.However, even with the application version lifecycle policy, the source bundle is deleted from the Amazon S3 source bucket.What should the development team do in the Elastic Beanstalk application version lifecycle settings to retain the source code in the S3 bucket?Read More →

A global company has a mobile app with static data stored in an Amazon S3 bucket in the us-east-1 Region.The company serves the content through an AmazonCloudFront distribution.The company is launching the mobile app in South Africa.The data must reside in the af-south-1 Region.The company does not want to deploy a specific mobile client for South Africa.What should the company do to meet these requirements?Read More →