Which code snippet below returns the URL of a load balanced web site created in CloudFormation with an AWS::ElasticLoadBalancing::LoadBalancer resource name "ElasticLoad Balancer"?

• A."Fn::Join" : ["". [ "http://", {"Fn::GetAtr" : [ "ElasticLoadBalancer","DNSName"]}]]
• B."Fn::Join" : ["". [ "http://", {"Fn::GetAtr" : [ "ElasticLoadBalancer","Url"]}]]
• C."Fn::Join" : ["". [ "http://", {"Ref" : "ElasticLoadBalancerUrl"}]]
• D."Fn::Join" : [".", [ "http://", {"Ref" : "ElasticLoadBalancerDNSName"}]]

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An application needs to use the IP address of the client in its processing. The application has been moved into AWS and has been placed behind an Application Load Balancer (ALB). However, all the client IP addresses now appear to be the same. The application must maintain the ability to scale horizontally.
Based on this scenario, what is the MOST cost-effective solution to this problem?

• A.Alter the application code to inspect a custom header. Alter the client code to pass the IP address in the custom header.
• B.Remove the application from the ALB. Delete the ALB and change Amazon Route 53 to direct traffic to the instance running the application.
• C.Alter the application code to inspect the X-Forwarded-For header. Ensure that the code can work properly if a list of IP addresses is passed in the header.
• D.Remove the application from the AL Create a Classic Load Balancer in its place. Direct traffic to the application using the HTTP protocol.

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An application that runs on an Amazon EC2 instance needs to access and make API calls to multiple AWS services.
What is the MOST secure way to provide access to the AWS services with MINIMAL management overhead?

• A.Use AWS KMS to store and retrieve credentials.
• B.Use EC2 instance profiles.
• C.Use AWS root user to make requests to the application.
• D.Store and retrieve credentials from AWS CodeCommit.

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An application that runs on an Amazon EC2 instance needs to access and make API calls to multiple AWS services.
What is the MOST secure way to provide access to the AWS services with MINIMAL management overhead?

• A.Store and retrieve credentials from AWS CodeCommit.
• B.Use AWS root user to make requests to the application.
• C.Use EC2 instance profiles.
• D.Use AWS KMS to store and retrieve credentials.

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An application is designed to use Amazon SQS to manage messages from many independent senders. Each sender's messages must be processed in the order they are received.
Which SQS feature should be implemented by the Developer?

• A.Enable ContentBasedDeduplication on the SQS queue
• B.Configure each message with unique MessageGroupIds.
• C.Configure each sender with a unique MessageGroupId
• D.Enable MessageDeduplicationIds on the SQS queue

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