Developer Associate (Page 23)

An AWS Lambda function that Is running in a test environment is not working property.However, there is no error associated with the Lambda function in the Amazon CloudWatch logs for the account.The Lambda function’s permissions do not include a resource-based policy.The Lambda function’s execution role has properly configured trust relationships and has no permissions policies attached.Which action should a developer take to allow logs for the Lambda function to appear in CloudWatch?Read More →

A developer wants the ability to roll back to a previous version of an AWS Lambda function in the event of errors caused by a new deployment.How can the developer achieve this with MINIMAL impact on users?Read More →

A developer is using Amazon S3 as the event source that invokes a Lambda function when new objects are created in the bucket.The event source mapping information is stored in the bucket notification configuration.The developer is working with different versions of the Lambda function, and has a constant need to update notification configuration so that Amazon S3 invokes the correct version.What is the MOST efficient and effective way to achieve mapping between the S3 event and Lambda?Read More →

A company that has large online business uses an Amazon DynamoDB table to store sales data.The company enabled Amazon DynamoDB Streams on the table.The transaction status of each sale is stored in a TransactionStatus attribute in the table.The value of the TransactionStatus attribute must be either failed, pending, or completed.The company wants to be notified of failed sales where the Price attribute is above a specific threshold.A developer needs to set up notification for the failed sales.Which solution will meet these requirements with the LEAST development effort?Read More →

An AWS Lambda function accesses two Amazon DynamoDB tables.A developer wants to improve the performance of the Lambda function by identifying bottlenecks in the function.How can the developer inspect the timing of the DynamoDB API calls?Read More →

A developer uses an AWS Lambda function in an application to edit users’ uploaded photos.The developer needs to update the Lambda function code and needs to test the updates.For testing, the developer must divide the user traffic between the original version of the Lambda function and the new version of the Lambda function.Which combination of steps will meet these requirements? (Choose two.)Read More →

A developer is designing an AWS Lambda function to perform a maintenance activity.The developer will use Amazon EventBridge (Amazon CloudWatch Events) to invoke the function on an hourly schedule.The developer wants the function to log information at different levels of detail according to the value of a log level variable.The developer must design the function so that the log level can be set without requiring a change to the function code.Which solution will meet these requirements?Read More →

A company uses an AWS CloudFormation template to deploy and manage its AWS infrastructure.The CloudFormation template creates Amazon VPC security groups and Amazon EC2 security groups.A manager finds out that some engineers modified the security groups of a few EC2 instances for testing purposes.A developer needs to determine what modifications occurred.Which solution will meet this requirement?Read More →

A developer is writing a web application that allows users to sign in.The application will run on Amazon EC2 instances behind an Application Load Balancer (ALB).The instances will run in an Auto Scaling group across multiple Availability Zones.How can the developer ensure that users stay signed in when the Auto Scaling group is scaled down?Read More →

A developer has an application that uses WebSocket APIs in Amazon API Gateway.The developer wants to use an API Gateway Lambda authorizer to control access to the application.The developer needs to add credential caching and reduce repeated usage of secret keys and authorization tokens on every request.Which combination of steps should the developer take to meet these requirements? (Choose two.)Read More →