DVA-C01 (Page 22)

A company has a multi-node Windows legacy application that runs on premises.The application uses a network shared folder as a centralized configuration repository to store configuration files in .xml format.The company is migrating the application to Amazon EC2 instances.As part of the migration to AWS, a developer must identify a solution that provides high availability for the repository.Which solution will meet this requirement MOST cost-effectively?Read More →

A company created an application to consume and process data.The application uses Amazon Simple Queue Service (Amazon SQS) and AWS Lambda functions.The application is currently working as expected, but it occasionally receives several messages that it cannot process properly.The company needs to clear these messages to prevent the queue from becoming blocked.A developer must implement a solution that makes queue processing always operational.The solution must give the company the ability to defer the messages with errors and save these messages for further analysis.What is the MOST operationally efficient solution that meets these requirements?Read More →

A developer has discovered that an application responsible for processing messages in an Amazon SQS queue is routinely falling behind.The application is capable of processing multiple messages in one invocation, but is only receiving one message at a time.What should the developer do to increase the number of messages the application receives?Read More →

A developer is writing a new web application that will be deployed and managed with AWS Elastic Beanstalk.The application will include an Amazon RDS DB instance.What steps should the developer take to access the RDS DB instance from the code? (Choose two.)Read More →

A company stores documents in Amazon S3 with default settings.A new regulation requires the company to encrypt the documents at rest, rotate the encryption keys annually, and keep a record of when the encryption keys were rotated.The company does not want to manage the encryption keys outside of AWS.Which solution will meet these requirements?Read More →

A developer is testing a Docker-based application that uses the AWS SDK to interact with Amazon DynamoDB.In the local development environment, the application has used IAM access keys.The application is now ready for deployment onto an ECS cluster.How should the application authenticate with AWS services in production?Read More →

A developer is building a serverless application that is based on AWS Lambda.The developer initializes the AWS software development kit (SDK) outside of theLambda handler function.What is the PRIMARY benefit of this action?Read More →

An application needs to encrypt data that is written to Amazon S3 where the keys are managed in an on-premises data center, and the encryption is handled byS3.Which type of encryption should be used?Read More →

A developer is deploying an application that will store files in an Amazon S3 bucket.The files must be encrypted at rest.The developer wants to automatically replicate the files to an S3 bucket in a different AWS Region for disaster recovery.How can the developer accomplish this task with the LEAST amount of configuration?Read More →

A developer is debugging an AWS Lambda function behind an Amazon API Gateway.Whenever the API Gateway endpoint is called, HTTP status code 200 is returned even though AWS Lambda is recording a 4xx error.What change needs to be made to return a proper error code through the API Gateway?Read More →