DVA-C01 (Page 34)

A company experienced partial downtime during the last deployment of a new application.AWS Elastic Beanstalk split the environment’s Amazon EC2 instances into batches and deployed a new version one batch at a time after taking them out of service.Therefore, full capacity was not maintained during deployment.The developer plans to release a new version of the application, and is looking for a policy that will maintain full capacity and minimize the impact of the failed deployment.Which deployment policy should the developer use?Read More →

A developer is creating a solution to track an account’s Amazon S3 buckets over time.The developer has created an AWS Lambda function that will run on a schedule.The function will list the account’s S3 buckets and will store the list in an Amazon DynamoDB table.The developer receives a permissions error when the developer runs the function with the AWSLambdaBasicExecutionRole AWS managed policy.Which combination of permissions should the developer use to resolve this error? (Choose two.)Read More →

A company hosts a three-tier web application on AWS behind an Amazon CloudFront distribution.A developer wants a dashboard to monitor error rates and anomalies of the CloudFront distribution with the shortest possible refresh interval.Which combination of slops should the developer take to meet these requirements? (Choose two.)Read More →

A company has an application that analyzes photographs.A developer is preparing the application for deployment to Amazon EC2 instances.The application’s image analysis functions require a mix of GPU instances and CPU instances that run on Amazon Linux.The developer needs to add code to the application so that the functions can determine whether they are running on a GPU instance.What should the functions do to obtain this information?Read More →

A developer is building an application that runs behind an Application Load Balancer (ALB).The ALB is configured as the origin for an Amazon CloudFront distribution.Users will log in to the application by using their social media accounts.How can the developer authenticate users?Read More →

A company has a web application that uses an Amazon Cognito user pool for authentication.The company wants to create a login page that includes the company logo.What should a developer do to meet these requirements?Read More →

A 3D printing company has developed a proof-of-concept application that is running on AWS Elastic Beanstalk.The application displays a list of products that are available for 3D printing, in addition to any available customizations.When the company deploys new versions of the application, the company wants to ensure that there is no application downtime.Additionally, the application must remain at the same level of server capacity throughout the deployment.Which deployment strategies will meet these requirements? (Choose two.)Read More →

A developer is implementing a serverless application by using AWS CloudFormation to provision Amazon S3 web hosting, Amazon API Gateway, and AWS Lambda functions.The Lambda function source code is zipped and uploaded to an S3 bucket.The S3 object key of the zipped source code is specified in the Lambda resource in the CloudFormation template.The developer notices that there are no changes in the Lambda function every time the CloudFormation stack is updated.How can the developer resolve this issue?Read More →

An application development team decides to use AWS X-Ray to monitor application code to analyze performance and perform root cause analysis.What does the team need to do to begin using X-Ray? (Choose two.)Read More →

A developer manages an Amazon RDS for PostgreSQL database.An Amazon Elastic Container Service (Amazon ECS) container that uses AWS Fargate needs to modify the contents of the database during a nightly run.Which combination of steps should the developer take to provide database access to the container in the MOST secure manner? (Choose two.)Read More →