Developer Associate (Page 55)

A developer is setting up infrastructure by using AWS CloudFormation.If an error occurs when the resources described in the Cloud Formation template are provisioned, successfully provisioned resources must be preserved.The developer must provision and update the CloudFormation stack by using the AWS CLI.Which solution will meet these requirements?Read More →

A developer tests an application that a company developed by using AWS Lambda.The Lambda functions are behind an AmazonAPI Gateway API.The timeout for the API method is set to the same timeout as the Lambda functions.When a request is sent to the API, the responses are timing out.Which action would help the developer troubleshoot this issue?Read More →

A company has an application that stores data in Amazon RDS instances.The application periodically experiences surges of high traffic that cause performance problems.During periods of peak traffic, a developer notices a reduction in query speed in all database queries.The team’s technical lead determines that a multi-threaded and scalable caching solution should be used to offload the heavy read traffic.The solution needs to improve performance.Which solution will meet these requirements with the LEAST complexity?Read More →

A developer has deployed a serverless application to AWS Lambda.The developer needs to encrypt the Lambda function’s environment variables by using an AWS Key Management Service (AWS KMS) customer managed key.When the developer attempts to configure the KMS key for the environment variables, an error occurs.The error message indicates that access to the KMS key was denied.What should the developer do to resolve this error?Read More →

A company has a serverless application on AWS that uses a fleet of AWS Lambda functions that have aliases.The company regularly publishes new Lambda function by using an in-house deployment solution.The company wants to improve the release process and to use traffic shifting.A newly published function version should initially make available only to a fixed percentage of production users.Which solution will meet these requirements?Read More →

A gaming website gives users the ability to trade game items with each other on the platform.The platform requires both users’ records to be updated and persisted in one transaction.If any update fails, the transaction must roll back.Which AWS solution can provide the transactional capability that is required for this feature?Read More →

A developer is building a serverless application by using AWS Serverless Application Model (AWS SAM) on multiple AWS Lambda functions.When the application is deployed, the developer wants to shift 10% of the traffic to the new deployment of the application for the first 10 minutes after deployment.If there are no issues, all traffic must switch over to the new version.Which change to the AWS SAM template will meet these requirements?Read More →

A developer is building a new complex application on AWS.The application consists of multiple microservices hosted on Amazon EC2.The developer wants to determine which microservice adds the most latency while handling a request.Which method should the developer use to make this determination?Read More →

A developer is writing an application to encrypt files outside of AWS before uploading the files to an Amazon S3 bucket.The encryption must be symmetric and must be performed inside the application.How can the developer implement the encryption in the application to meet these requirements?Read More →

A developer is troubleshooting a new AWS Lambda function.The function should run automatically each time a new object is uploaded to an Amazon S3 bucket.The function is supposed to read the object, make modifications, and overwrite the object with the new version.The developer finds that all calls failed within the function code.Which of the following are possible reasons for this failure? (Choose two.)Read More →