Developer Associate (Page 38)

A developer must analyze performance issues with production-distributed applications written as AWS Lambda functions.These distributed Lambda applications invoke other components that make up the applications.How should the developer identify and troubleshoot the root cause of the performance issues in production?Read More →

A developer is exposing an API by using Amazon API Gateway and AWS Lambda as the backend for an application.The developer wants to add validation rules for a POST method to ensure that the data from the frontend web form is valid.The validation rules must include mandatory fields, data type, length, and regular expressions.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 static website is hosted in an Amazon S3 bucket.Several HTML pages on the site use JavaScript to download images from another Amazon S3 bucket.These images are not displayed when users browse the site.What is the possible cause for the issue?Read More →

An application runs on multiple EC2 instances behind an ELB.Where is the session data best written so that it can be served reliably across multiple requests?Read More →

A developer has created a new IAM user that has the s3:PutObject permission to write to a specific Amazon S3 bucket.The S3 bucket uses server-side encryption with AWS KMS managed keys (SSE-KMS) as the default encryption.When an application uses the access key and secret key of the IAM user to call the PutObject API operation, the application receives an access denied error.What should the developer do to resolve this error?Read More →

A company is using Amazon OpenSearch Service to implement an audit monitoring system.A developer needs to create an AWS CloudFormation custom resource that is associated with an AWS Lambda function to configure the OpenSearch Service domain.The Lambda function must access the OpenSearch Service domain by using OpenSearch Service internal master user credentials.What is the MOST secure way to pass these credentials to the Lambda function?Read More →

A developer has written code for an application and wants to share it with other developers on the team to receive feedback.The shared application code needs to be stored long-term with multiple versions and batch change tracking.Which AWS service should the developer use?Read More →

A developer is planning to migrate on-premises company data to Amazon S3.The data must be encrypted, and the encryption keys must support automatic annual rotation.The company must use AWS Key Management Service (AWS KMS) to encrypt the data.Which type of keys should the developer use to meet these requirements?Read More →

A developer created a Lambda function for a web application backend.When testing the Lambda function from the AWS Lambda console, the developer can see that the function is being run, but there is no log data being generated in Amazon CloudWatch Logs, even after several minutes.What could cause this situation?Read More →