DVA-C01 (Page 33)

A developer is creating a serverless application that uses an AWS Lambda function The developer will use AWS CloudFormation to deploy the application The application will write logs to Amazon CloudWatch Logs.The developer has created a log group in a CloudFormation template for the application to use.The developer needs to modify the CloudFormation template to make the name of the log group available to the application at runtime.Which solution will meet this requirement?Read More →

A company’s infrastructure team is using AWS CloudFormation to deploy common infrastructure resources such as VPCs, subnets, Amazon RDS DB cluster endpoints, and Amazon DynamoDB tables for other teams to use.The CloudFormation templates also create AWS Systems Manager Parameter Store parameters to store information about these resources for application developers.The parameters include elements such as RDS DB cluster endpoints for clusters that the templates create.A developer creates a CloudFormation template that includes an AWS Lambda function that reads the SSM parameter value to access RDS DB cluster endpoints.The Lambda function has reserved concurrency configured to match the value of the Parameter Store maximum throughput (transactions per second) quota for the account and the AWS Region that hosts the account.The developer wants to prepare for a potential load increase.The developer expects the Lambda function’s concurrent invocation rate to be two times more than the Parameter Store maximum throughput quota value.Which solution will prepare for the load increase MOST cost-effectively?Read More →

A developer is building an application that supports multiple languages.The directory structure and file names for all versions of the website are identical.When a user views the website, the preferred language is added as a query string parameter.The following is an example of the URL: http://d111111abcdef2.doudfront.net/main.html?language=de.The query string is passed to Amazon CloudFront.No matter which language the developer selects, the English page is returned.If the developer accesses the website directly and bypasses CloudFront.the page works as expectedWhat should the developer do so that the content of the page matches the language that the developer selects?Read More →

A developer tests an application that a company developed by using AWS Lambda.The Lambda functions are behind an AmazonAPI Gateway API.The timeout for the API method is set to the same timeout as the Lambda functions.When a request is sent to the API, the responses are timing out.Which action would help the developer troubleshoot this issue?Read More →

A developer has deployed a serverless application to AWS Lambda.The developer needs to encrypt the Lambda function’s environment variables by using an AWS Key Management Service (AWS KMS) customer managed key.When the developer attempts to configure the KMS key for the environment variables, an error occurs.The error message indicates that access to the KMS key was denied.What should the developer do to resolve this error?Read More →

A gaming website gives users the ability to trade game items with each other on the platform.The platform requires both users’ records to be updated and persisted in one transaction.If any update fails, the transaction must roll back.Which AWS solution can provide the transactional capability that is required for this feature?Read More →

A developer is building a new complex application on AWS.The application consists of multiple microservices hosted on Amazon EC2.The developer wants to determine which microservice adds the most latency while handling a request.Which method should the developer use to make this determination?Read More →

A developer is troubleshooting a new AWS Lambda function.The function should run automatically each time a new object is uploaded to an Amazon S3 bucket.The function is supposed to read the object, make modifications, and overwrite the object with the new version.The developer finds that all calls failed within the function code.Which of the following are possible reasons for this failure? (Choose two.)Read More →

When a Developer tries to run an AWS CodeBuild project, it raises an error because the length of all environment variables exceeds the limit for the combined maximum of characters.What is the recommended solution?Read More →

A company is providing services to many downstream consumers.Each consumer may connect to one or more services.This has resulted in a complex architecture that is difficult to manage and does not scale well.The company needs a single interface to manage these services to consumers.Which AWS service should be used to refactor this architecture?Read More →