DVA-C01 (Page 20)

A developer is making changes to a custom application that uses AWS Elastic Beanstalk.Which solutions will update the Elastic Beanstalk environment with the new application version after the developer completes the changes? (Choose two.)Read More →

A company is migrating a legacy application to a serverless application on AWS.The legacy application consists of a set of web services that are exposed by an Amazon API Gateway API.A developer needs to replace the existing implementation of web services with AWS Lambda functions.The developer needs to test a new version of the API that uses the functions in production.The developer must minimize the impact of the testing on the application’s users.Which solution will meet these requirements?Read More →

A developer has created on AWS Lambda function tool uses 15 MB of memory.When the developer runs the code natively on a laptop that has 4 cores, the function runs within 100 ms.When the developer deploys the code as a Lambda function with 128 MB of memory, the first run takes 3 seconds.Subsequent runs take more than 500 ms to finish.The developer needs to improve the performance of the Lambda function so that the function runs consistently in less than 100 ms, excluding the initial startup time.Which solution will meet this requirement?Read More →

A research company has a website that is used once each day to perform scientific calculations based on inputs that are submitted through a webpage.The calculations are CPU intensive.An AWS Lambda function performs the calculations once each day.Users occasionally receive errors because of Lambda function timeouts.Which change will reduce the Lambda function’s runtime duration?Read More →

A developer is working on an ecommerce website.The developer wants to review server logs without logging in to each of the application servers individually.The website runs on multiple Amazon EC2 instances, is written in Python, and needs to be highly available.How can the developer update the application to meet these requirements with MINIMUM changes?Read More →

A company needs an event-management platform to accept registrations for an upcoming event.The platform must perform a single invocation of an existing AWS Lambda function 10 minutes after a user completes a new account registration.Which solution will meet these requirements?Read More →

A developer has built an application running on AWS Lambda using AWS Serverless Application Model (AWS SAM).What is the correct sequence of steps to successfully deploy the application?Read More →

A company has an AWS Lambda function that reads messages from an Amazon Simple Queue Service (Amazon SQS) queue by using the Amazon SQS API.The Lambda function is not processing all the messages successfully because of random failures of a third-party dependency.A developer needs to improve the reliability of the Lambda function so that the Lambda function will process each message successfully despite the failures of the third-party dependency.Which solution will meet this requirement with the LEAST effort?Read More →

A developer is building a three-tier web application that should be able to handle a minimum of 5000 requests per minute.Requirements state that the web tier should be completely stateless while the application maintains session state for the users.How can session data be externalized, keeping latency at the LOWEST possible value?Read More →

A social media application stores millions of video clips in Amazon S3 and serves them to users across the world.The traffic to the application varies, but access often increases suddenly to more than 10,000 PUT requests and GET requests each second.As the application has grown in popularity, users report poor quality of video streaming.Which solution will provide the LARGEST improvement in performance?Read More →