Developer Associate (Page 29)

A social media application uses the AWS SDK for JavaScript on the frontend to get user credentials from AWS Security Token Service (AWS STS).The application stores its assets in an Amazon S3 bucket.The application serves its content by using an Amazon CloudFront distribution with the origin set to the S3 bucket.The credentials for the role that the application assumes to make the SDK calls are stored in plaintext in a JSON file within the application code.The developer needs to implement a solution that will allow the application to get user credentials without having any credentials hardcoded in the application code.Which solution will meet these requirements?Read More →

A developer is building a three-tier application with an Application Load Balancer (ALB), Amazon EC2 instances, and Amazon RDS.There is an alias record in Amazon Route 53 that points to the ALB.When the developer tries to access the ALB from a laptop, the request times out.Which logs should the developer investigate to verify that the request is reaching the AWS network?Read More →

A company needs to develop a proof of concept for a web service application.The application will show the weather forecast for one of the company’s office locations.The application will provide a REST endpoint that clients can call.Where possible, the application should use caching features provided by AWS to limit the number of requests to the backend service.The application backend will receive a small amount of traffic only during testing.Which approach should the developer take to provide the REST endpoint MOST cost-effectively?Read More →

An ecommerce company is using an AWS Lambda function behind Amazon API Gateway as its application tier.To process orders during checkout, the application calls a POST API from the frontend.The POST API invokes the Lambda function asynchronously.In rare situations, the application has not processed orders.The Lambda application logs show no errors or failures.What should a developer do to solve this problem?Read More →

A company is using an Amazon API Gateway REST API endpoint as a webhook to publish events from an on-premises source control management (SCM) system to Amazon EventBridge.The company has configured an EventBridge rule to listen for the events and to control application deployment in a central AWS account.The company needs to receive the same events across multiple receiver AWS accounts.How can a developer meet these requirements without changing the configuration of the SCM system?Read More →

A developer at a company recently created a serverless application to process and show data from business reports.The application’s user interface (UI) allows users to select and start processing the flies.The UI displays a message when the result is available to view.The application uses AWS Step Functions with AWSLambda functions to process the files.The developer used Amazon API Gateway and Lambda functions to create an API to support the UI.The company’s UI team reports that the request to process a file s often returning timeout errors because of the size or complexity of the files.The UI team wants the API to provide an immediate response so that the UI can display a message while the files are being processed.The backend process that is invoked by theAPI needs to send an email message when the report processing is complete.What should the developer do to configure the API to meet these requirements?Read More →

A developer is configuring an application’s deployment environment in AWS CodePipeline.The application code is stored in a GitHub repository.The developer wants to ensure that the repository package’s unit tests run in the new deployment environment.The developer has already set the pipeline’s source provider to GitHub and has specified the repository and branch to use in the deployment.Which combination of steps should the developer take next to meet these requirements with the LEAST overhead? (Choose two.)Read More →

A developer has an application that asynchronously invokes an AWS Lambda function.The developer wants to store messages that resulted in failed invocations of the Lambda function so that the application can retry the call later.What should the developer do to accomplish this goal with the LEAST operational overhead?Read More →

A developer is using AWS Amplify Hosting to build and deploy an application.The developer is receiving an increased number of bug reports from users.The developer wants to add end-to-end testing to the application to eliminate as many bugs as possible before the bugs reach production.Which solution should the developer implement to meet these requirements?Read More →

A developer is designing an Amazon DynamoDB table for an application.The application will store user information that includes a unique identifier and an email address for each user.The application must be able to query the table by using either the unique identifier or the email address.How should the developer design the DynamoDB table to meet these requirements?Read More →