Developer Associate (Page 30)

A banking application processes thousands of transactions each second.Each transaction payload must have end-to-end encryption.The application encrypts each transaction locally by using the AWS Key Management Service (AWS KMS) GenerateDataKey operation.A developer is testing the application and receives a ThrottlingException error.Which actions are best practices to resolve this error? (Choose two.)Read More →

A developer is creating a service that uses an Amazon S3 bucket for image uploads.The service will use an AWS Lambda function to create a thumbnail of each image.Each time an image is uploaded, the service needs to send an email notification and create the thumbnail.The developer needs to configure the image processing and email notifications setup.Which solution will meet these requirements?Read More →

A developer is designing a full-stack serverless application.Files for the website are stored in an Amazon S3 bucket.AWS Lambda functions that use AmazonAPI Gateway endpoints return results from an Amazon DynamoDB table.The developer must create a solution that securely provides registration and authentication for the application while minimizing the amount of configuration.Which solution meets these requirements?Read More →

A developer is planning to use an Amazon API Gateway and AWS Lambda to provide a REST API.The developer will have three distinct environments to manage: development, test, and production.How should the application be deployed while minimizing the number of resources to manage?Read More →

A developer has created a REST API using Amazon API Gateway.The developer wants to log who and how each caller accesses the API.The developer also wants to control how long the logs are kept.What should the developer do to meet these requirements?Read More →

A developer is creating an AWS Lambda function that will connect to an Amazon RDS for MySQL instance.The developer wants to store the database credentials.The database credentials need to be encrypted and the database password needs to be automatically rotated.Which solution will meet these requirements?Read More →

A company is planning to use AWS CodeDeploy to deploy an application to AWS Lambda.During the deployment of a new version of the application, the company initially must expose only 10% of live traffic to the new version of the deployed application.Then, every 10 minutes, the company must route another10% of live traffic to the new version of the deployed application until all live traffic is routed to the new version.Which CodeDeploy predefined configuration will meet these requirements?Read More →

A developer wants to reduce risk when deploying a new version of an existing AWS Lambda function.To test the Lambda function, the developer needs to split the traffic between the existing version and the new version of the Lambda function.Which solution will meet these requirements?Read More →

An ecommerce application is running behind an Application Load Balancer.A developer observes some unexpected load on the application during non-peak hours.The developer wants to analyze patterns for the client IP addresses that use the application.Which HTTP header should the developer use for this analysis?Read More →

A company has a three-tier application that is deployed in Amazon Elastic Container Service (Amazon ECS).The application is using an Amazon RDS for MySQL DB instance.The application performs more database reads than writes.During times of peak usage, the application’s performance degrades.When this performance degradation occurs, the DB instance’s ReadLatency metric in Amazon CloudWatch increases suddenly.How should a developer modify the application to improve performance?Read More →