DVA-C01 (Page 2)

A developer needs to use the AWS CLI on an on-premises development server temporarily to access AWS services while performing maintenance.The developer needs to authenticate to AWS with their identity for several hours.What is the MOST secure way to call AWS CLI commands with the developer’s IAM identity?Read More →

A Developer is migrating an on-premises application to AWS.The application currently takes user uploads and saves them to a local directory on the server.All uploads must be saved and made immediately available to all instances in an Auto Scaling group.Which approach will meet these requirements?Read More →

A developer deploys an ecommerce application on Amazon EC2 instances behind an Application Load Balancer (ALB).The instances run in an Amazon EC2 Auto Scaling group.The EC2 instances are based on an Amazon Machine Image (AMI) that uses an Amazon Elastic Block Store (Amazon EBS) root volume.After deployment, the developer notices that a third of the instances seem to be idle.These instances are not receiving requests from the load balancer.The developer verifies that all the instances are registered with the load balancer.The developer must implement a solution to allow the EC2 instances to receive requests from the load balancer.Which action will meet this requirement?Read More →

A developer is creating a utility application as an AWS Lambda function.The code is using multiple threads.The developer runs the Lambda function, and the function does not perform as well as the developer expected.What should the developer do to improve the performance of the Lambda function?Read More →

A developer is deploying an AWS Lambda function.The developer wants the ability to return to older versions of the function quickly and seamlessly.How can the developer achieve this goal with the LEAST operational overhead?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 has a virtual reality (VR) game.The game has a serverless backend that consists of Amazon API Gateway, AWS Lambda, and Amazon DynamoDB.Recently, the company noticed a sudden increase of new users globally.The company also noticed delays in the retrieval of user data.Which AWS service or feature can the company use to reduce the database response time to microseconds?Read More →

A developer is creating a new batch application that will run on an Amazon EC2 instance.The application requires read access to an Amazon S3 bucket.The developer needs to follow security best practices to grant S3 read access to the application.Which solution meets these requirements?Read More →

A company set up a continuous build process that uses AWS CodeBuild and AWS CodeCommit.During the development phase, developers are frequently pushing code and causing significant build failures.The company wants a solution that will build code before the developers push the code to the main branch.Which solution meets these requirements MOST cost-effectively?Read More →

An application uses an Amazon CloudFront distribution to deliver static content from Amazon S3 buckets that are set up in multiple AWS Regions around the world.A developer receives reports of problems with latency when cached content is updated.The developer plans to address this problem by redirecting requests on cache misses to the S3 bucket in the Region that is nearest to the user’s country.The developer configures the distribution to cache based on the CloudFront-Viewer-Country request header.What should the developer do next to redirect requests on cache misses?Read More →