A user has created a public subnet with VPC and launched an EC2 instance within it. The user is trying to delete the subnet. What will happen in this scenario?

Answer options:

A.It will delete the subnet and make the EC2 instance as a part of the default subnet.
B.It will not allow the user to delete the subnet until the instances are terminated.
C.It will delete the subnet as well as terminate the instances.
D.The subnet can never be deleted independently, but the user has to delete the VPC first.

Answer – B
In AWS, when you try to delete a subnet with instances, it will not be allowed. The below error message will be shown when u try to delete a subnet with instances. Hence, option B is the CORRECT answer.
 For more information on VPC and subnets, please visit the link
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Subnets.html