Developer Associate (Page 16)

A developer registered an AWS Lambda function as a target for an Application Load Balancer (ALB) using a CLI command.However, the Lambda function is not being invoked when the client sends requests through the ALB.Why is the Lambda function not being invoked?Read More →

A developer is leveraging a Border Gateway Protocol (BGP)-based AWS VPN connection to connect from on-premises to Amazon EC2 instances in the developer’s account.The developer is able to access an EC2 instance in subnet A, but is unable to access an EC2 instance in subnet B in the same VPC.Which logs can the developer use to verify whether the traffic is reaching subnet B?Read More →

A developer needs to build an AWS CloudFormation template that self-populates the AWS Region variable that deploys the CloudFormation template.What is the MOST operationally efficient way to determine the Region in which the template is being deployed?Read More →

A developer is deploying a new application to Amazon Elastic Container Service (Amazon ECS).The developer needs to securely store and retrieve different types of variables.These variables include authentication information for a remote API, the URL for the API, and credentials.The authentication information and API URL must be available to all current and future deployed versions of the application across development, testing, and production environments.How should the developer retrieve the variables with the FEWEST application changes?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 company receives food orders from multiple partners.The company has a microservices application that uses Amazon API Gateway APIs with AWS Lambda integration.Each partner sends orders by calling a customized API that is exposed through API Gateway.The API call invokes a shared Lambda function to process the orders.Partners need to be notified after the Lambda function processes the orders.Each partner must receive updates for only the partner’s own orders.The company wants to add new partners in the future with the fewest code changes possible.Which solution will meet these requirements in the MOST scalable way?Read More →

A company is building an application for stock trading.The application needs sub-millisecond latency for processing trade requests.The company uses AmazonDynamoDB to store all the trading data that is used to process each trading request.A development team performs load testing on the application and finds that the data retrieval time is higher than expected.The development team needs a solution that reduces the data retrieval time with the least possible effort.Which solution meets these requirements?Read More →

A developer needs to implement a custom machine learning (ML) library in an application.The size of the library is 15 GB.The size of the library is increasing.The application uses AWS Lambda functions.All the Lambda functions must have access to the library.Which solution will meet these requirements?Read More →

A company is planning to use AWS CodeDeploy to deploy an application to Amazon Elastic Container Service (Amazon ECS).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, after 15 minutes elapse, the company must route all the remaining live traffic to the new version of the deployed application.Which CodeDeploy predefined configuration will meet these requirements?Read More →

A developer is trying to get data from an Amazon DynamoDB table called demoman-table.The developer configured the AWS CLI to use a specific IAM user’s credentials and ran the following command:aws dynamodb get-item –table-name demoman-table –key ‘{“id”: {“N”:”1993″}}’The command returned errors and no rows were returned.What is the MOST likely cause of these issues?Read More →