DVA-C02

A developer is creating an AWS Lambda function that searches for items from an Amazon DynamoDB table that contains customer contact information.The DynamoDB table items have the customer’s email_address as the partition key and additional properties such as customer_type, name and job_title.The Lambda function runs whenever a user types a new character into the customer_type text input.The developer wants the search to return partial matches of all the email_address property of a particular customer_type.The developer does not want to recreate the DynamoDB table.What should the developer do to meet these requirements?Read More →

A developer has a continuous integration and continuous delivery (CI/CD) pipeline that uses AWS CodeArtifact and AWS CodeBuild.The build artifacts are between 0.5 GB and 1.5 GB in size.The builds happen frequently and retrieve many dependencies from CodeArtifact each time.The builds have been slow because of the time it takes to transfer dependencies.The developer needs to improve build performance by reducing the number of dependencies that are retrieved for each build.Which solution will meet this requirement?Read More →

A developer is creating an AWS Lambda function that consumes messages from an Amazon Simple Queue Service (Amazon SQS) standard queue.The developer notices that the Lambda function processes some messages multiple times.How should developer resolve this issue MOST cost-effectively?Read More →

A company hosts its application on AWS.The application runs on an Amazon Elastic Container Service (Amazon ECS) cluster that uses AWS Fargate.The cluster runs behind an Application Load Balancer.The application stores data in an Amazon Aurora database.A developer encrypts and manages database credentials inside the application.The company wants to use a more secure credential storage method and implement periodic credential rotation.Which solution will meet these requirements with the LEAST operational overhead?Read More →

A developer is creating a new application for a pet store.The application will manage customer rewards points.The developer will use Amazon DynamoDB to store the data for the application.The developer needs to optimize query performance and limit partition overload before actual performance analysis.Which option should the developer use for a partition key to meet these requirements?Read More →

A developer is working on an application that processes operating data from IoT devices.Each IoT device uploads a data file once every hour to an Amazon S3 bucket.The developer wants to immediately process each data file when the data file is uploaded to Amazon S3.The developer will use an AWS Lambda function to process the data files from Amazon S3.The Lambda function is configured with the S3 bucket information where the files are uploaded.The developer wants to configure the Lambda function to immediately invoke after each data file is uploaded.Which solution will meet these requirements?Read More →

A developer creates a static website for their department.The developer deploys the static assets for the website to an Amazon S3 bucket and serves the assets with Amazon CloudFront.The developer uses origin access control (OAC) on the CloudFront distribution to access the S3 bucket.The developer notices users can access the root URL and specific pages but cannot access directories without specifying a file name.For example, /products/index.html works, but /products/ returns an error.The developer needs to enable accessing directories without specifying a file name without exposing the S3 bucket publicly.Which solution will meet these requirements?Read More →

A developer designed an application on an Amazon EC2 instance.The application makes API requests to objects in an Amazon S3 bucket.Which combination of steps will ensure that the application makes the API requests in the MOST secure manner? (Choose two.)Read More →

An online sales company is developing a serverless application that runs on AWS.The application uses an AWS Lambda function that calculates order success rates and stores the data in an Amazon DynamoDB table.A developer wants an efficient way to invoke the Lambda function every 15 minutes.Which solution will meet this requirement with the LEAST development effort?Read More →

A company uses AWS CloudFormation to deploy an application that uses an Amazon API Gateway REST API with AWS Lambda function integration.The application uses Amazon DynamoDB for data persistence.The application has three stages: development, testing, and production.Each stage uses its own DynamoDB table.The company has encountered unexpected issues when promoting changes to the production stage.The changes were successful in the development and testing stages.A developer needs to route 20% of the traffic to the new production stage API with the next production release.The developer needs to route the remaining 80% of the traffic to the existing production stage.The solution must minimize the number of errors that any single customer experiences.Which approach should the developer take to meet these requirements?Read More →