DVA-C01 (Page 14)

A developer is writing a serverless application that requires an AWS Lambda function to be invoked every 10 minutes.What is an automated and serverless way to invoke the function?Read More →

A developer is using an Amazon Kinesis Data Firehose delivery stream to store data in Amazon S3.Before storing the data in Amazon S3, the developer wants to enrich the data by combining the data with data from an Amazon DynamoDB table.How can the developer implement the data enrichment?Read More →

A company has an application that uses Amazon Cognito user pools as an identity provider.The company must secure access to user records.The company has set up multi-factor authentication (MFA).The company also wants to send a login activity notification by email every time a user logs in.What is the MOST operationally efficient solution that meets this requirement?Read More →

An application running on Amazon EC2 opens connections to an Amazon RDS SQL Server database.The developer does not want to store the user name and password for the database in the code.The developer would also like to automatically rotate the credentials.What is the MOST secure way to store and access the database credentials?Read More →

A developer is designing a serverless application for an ecommerce website.An Amazon API Gateway API exposes AWS Lambda functions for billing, payment, and user operations.The website features shopping carts for the users.The shopping carts must be stored for extended periods of time and will be retrieved frequently by the front-end application.The load on the application will vary significantly based on the time of day and the promotional sales that are offered on the website.The application must be able to scale automatically to meet these changing demands.Which solution will meet these requirements?Read More →

A developer maintains an Amazon API Gateway REST API.Customers use the API through a frontend UI and Amazon Cognito authentication.The developer has a new version of the API that contains new endpoints and backward-incompatible interface changes.The developer needs to provide beta access to other developers on the team without affecting customers.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A developer is developing an application that uses signed requests (Signature Version 4) to call other AWS services.The developer has created a canonical request, has created the string to sign, and has calculated signing information.Which methods could the developer use to complete a signed request? (Choose two.)Read More →

A company needs an application that consumes logs from Apache HTTP servers at a large scale with near real-time processing.The logs will vary in size from 300 KB to 500 KB.As part of processing, the company needs to convert the logs to JSON format and then upload the logs to an Amazon OpenSearch Service cluster.Which combination of steps will meet these requirements? (Choose two.)Read More →

A developer deploys a custom application to three Amazon EC2 instances.The application processes messages from an Amazon Simple Queue Service (Amazon SQS) standard queue with default settings.When the developer runs a load test on the Amazon SQS queue, the developer discovers that the application processes many messages multiple times.How can the developer ensure that the application processes each message exactly once?Read More →

A company has a new application.The company needs to secure sensitive configuration data such as database connection strings, application license codes, and API keys that the application uses to access external resources.The company must track access to the configuration data for auditing purposes.The resources are managed outside the application.The company is not required to manage rotation of the connection strings, license codes, and API keys in the application.The company must implement a solution to securely store the configuration data and to give the application access to the configuration data.The solution must comply with security best practices.Which solution will meet these requirements MOST cost-effectively?Read More →