A Developer is writing a REST service that will add items to a shopping list. The service is built on Amazon API Gateway with AWS Lambda integrations. The shopping list items are send as query string parameters in the method request.
How should the Developer convert the query string parameters to arguments for the Lambda function?

• A.Enable request validation
• B.Include the Amazon Resource Name (ARN) of the Lambda function
• C.Change the integration type
• D.Create a mapping template

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The Developer for a retail company must integrate a fraud detection solution into the order processing solution. The fraud detection solution takes between ten and thirty minutes to verify an order. At peak, the web site can receive one hundred orders per minute.
What is the most scalable method to add the fraud detection solution to the order processing pipeline?

• A.Write all new orders to Amazon DynamoDB. Configure DynamoDB Streams to include all new orders. Subscribe a Lambda function to automatically read batches of records from the Kinesis Stream. The Lambda function includes the fraud detection software and will update the order with a pass or fail status.
• B.Add all new orders to an Amazon SQS queue. Configure a fleet of 10 EC2 instances spanning multiple AZs with the fraud detection solution installed on them to pull orders from this queue. Update the order with a pass or fails status.
• C.Add all new orders to an SQS queue. Configure an Auto Scaling group that uses the queue depth metric as its unit of scale to launch a dynamically-sized fleet of EC2 instances spanning multiple AZs with the fraud detection solution installed on them to pull orders from this queue. Update the order with a pass or fails status.
• D.Add all new orders to an Amazon Kinesis Stream. Subscribe a Lambda function to automatically read batches of records from the Kinesis Stream. The Lambda function includes the fraud detection software and will update the order with a pass or fail status.

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A developer wants to modify the following AWS Cloud Formation template to embed another CloudFormation stack:

Which syntax should the developer add to the blank line of the CloudFormation template to meet this requirement?

• A."Typ" : "AWS::CloudFormation::Stack",
• B."Mapping" : "AWS::CloudFormation::NestedStack",
• C."Mapping" : "AWS::CloudFormation::Stack",
• D."Type" : "AWS;:CloudFcrmation::NestedStack",

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A developer is designing a web application in which new users will use their email addresses to create accounts Millions of users are expected to sign up. The application will store attributes for each user Which AWS service or feature should the developer implement to meet these requirements?

• A.Amazon Cognito user pools
• B.AWS Mobile Hub Cloud Logic
• C.AWS AppSync
• D.AWS Mobile Hub User File Storage

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A developer is creating a serverless web application and maintains different branches of code The developer wants to avoid updating the Amazon API Gateway target endpoint each time a new code push is performed What solution would allow me developer to perform a code push efficiently, without the need to update the API Gateway?

• A.Create aliases and versions In AWS Lambda.
• B.Tag the AWS Lambda functions with different names
• C.Associate different AWS Lambda functions to an API Gateway target endpoint
• D.Create different stages in API Gateway, then associate API Gateway with aws Lambda

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