DVA-C01 (Page 2)

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 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 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 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 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 →

What does an Amazon SQS delay queue accomplish?Read More →

A company is building a compute-intensive application that will run on a fleet of Amazon EC2 instances.The application uses attached Amazon EBS disks for storing data.The application will process sensitive information and all the data must be encrypted.What should a Developer do to ensure the data is encrypted on disk without impacting performance?Read More →

An application needs to use the IP address of the client in its processing.The application has been moved into AWS and has been placed behind an ApplicationLoad Balancer (ALB).However, all the client IP addresses now appear to be the same.The application must maintain the ability to scale horizontally.Based on this scenario, what is the MOST cost-effective solution to this problem?Read More →

A Development team is working on a case management solution that allows medical claims to be processed and reviewed.Users log in to provide information related to their medical and financial situations.As part of the application, sensitive documents such as medical records, medical imaging, bank statements, and receipts are uploaded to Amazon S3.All documents must be securely transmitted and stored.All access to the documents must be recorded for auditing.What is the MOST secure approach?Read More →

A Company runs continuous integration/continuous delivery (CI/CD) pipelines for its application on AWS CodePipeline.A Developer must write unit tests and run them as part of the pipelines before staging the artifacts for testing.How should the Developer incorporate unit tests as part of CI/CD pipelines?Read More →