Your team has developed an application that will be launched on EC2 Instances that are part of an Autoscaling Group. It needs to be ensured that the application can get the IP address of the Instance. How can you achieve this?

Answer options:

A.Make the application query the Instance Metadata.
B.Make the application query the Instance Userdata.
C.Make the application query the Autoscaling Group.
D.Make the application query the Launch configuration.

Answer - A
This is given in the AWS Documentation.
Instance metadata is data about your instance that you can use to configure or manage the running instance.
Because your instance metadata is available from your running instance, you do not need to use the Amazon EC2 console or the AWS CLI. This can be helpful when you`re writing scripts to run from your instance. For example, you can access the local IP address of your instance from instance metadata to manage a connection to an external application.
Since the data can only be retrieved from the Instance Metadata, all other options are invalid.
For more information on Instance Metadata, please refer to the below URL-
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html