DVA-C01 (Page 14)

A developer created a Lambda function for a web application backend.When testing the Lambda function from the AWS Lambda console, the developer can see that the function is being run, but there is no log data being generated in Amazon CloudWatch Logs, even after several minutes.What could cause this situation?Read More →

An application is using Amazon DynamoDB as its data store, and should be able to read 100 items per second as strongly consistent reads.Each item is 5 KB in size.To what value should the table’s provisioned read throughput be set?Read More →

A company has a website that displays a daily newsletter.When a user visits the website, an AWS Lambda function processes the browser’s request and queries the company’s on-premises database to obtain the current newsletter.The newsletters are stored in English.The Lambda function uses the Amazon TranslateTranslateText API operation to translate the newsletters, and the translation is displayed to the user.Due to an increase in popularity, the website’s response time has slowed.The database is overloaded.The company cannot change the database and needs a solution that improves the response time of the Lambda function.Which solution meets these requirements?Read More →

A developer is setting up the deployment of application stacks to new test environments by using the AWS Cloud Development Kit (AWS CDK).The application contains the code for several AWS Lambda functions that will be deployed as assets.Each Lambda function is defined by using the AWS CDK Lambda construct library.The developer has already successfully deployed the application stacks to the alpha environment in the first account by using the AWS CDK CLI’s cdk deploy command.The developer is preparing to deploy to the beta environment in a second account for the first time.The developer makes no significant changes to the CDK code between deployments, but the initial deployment in the second account is unsuccessful and returns a NoSuchBucket error.Which command should the developer run before redeployment to resolve this error?Read More →

A company has hundreds of AWS Lambda functions that the company’s QA team needs to test by using the Lambda function URLs.A developer needs to configure the authentication of the Lambda functions to allow access so that the QA IAM group can invoke the Lambda functions by using the public URLs.Which solution will meet these requirements?Read More →

A serverless application is using AWS Step Functions to process data and save it to a database.The application needs to validate some data with an external service before saving the data.The application will call the external service from an AWS Lambda function, and the external service will take a few hours to validate the data.The external service will respond to a webhook when the validation is complete.A developer needs to pause the Step Functions workflow and wait for the response from the external service.What should the developer do to meet this requirement?Read More →

A developer is writing an application that will run on Amazon EC2 instances in an Auto Scaling group.The developer wants to externalize the session state to support the application.Which AWS services or resources can the developer use to meet these requirements? (Choose two.)Read More →

A developer is creating an application that will store personal health information (PHI).The PHI needs to be encrypted at all times.An encrypted Amazon RDS for MySQL DB instance is storing the data.The developer wants to increase the performance of the application by caching frequently accessed data while adding the ability to sort or rank the cached datasets.Which solution will meet these requirements?Read More →

A company’s developer is creating an AWS Lambda function that will read data from an Amazon RDS database.The company’s security policies require the database credentials to be encrypted at rest by AWS Key Management Service (AWS KMS) keys.The database credentials must also be automatically rotated.The Lambda function needs to be able to read the database credentials securely.Which solution will meet these requirements?Read More →

A developer is running an application on an Amazon EC2 instance.When the application tries to read an Amazon S3 bucket, the application fails.The developer notices that the associated IAM role is missing the S3 read permission.The developer needs to give the application the ability to read the S3 bucket.Which solution will meet this requirement with the LEAST application disruption?Read More →