A user has created a subnet in VPC and launched an EC2 instance within it and is trying to access the instance through internet. The user has not selected the option to assign the IP address while launching the instance. Which of the below mentioned statements is true with respect to this scenario?

Answer options:

A.The instance will always have a public DNS attached to the instance by default
B.The user can directly attach an elastic IP to the instance
C.The instance will never launch if the public IP is not assigned
D.The user would need to create an internet gateway and then attach an elastic IP to the instance to connect from internet

Answer – D
When you create a simple subnet and VPC , there is no internet gateway attached to the VPC. So to access it from the internet you need to ensure an Internet gateway is attached to the VPC and an elastic or public IP is assigned to the EC2 instance.
For more information on VPC and subnets , please visit the URL:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_Scenario1.html