An EC2 Instance has been setup in AWS. A software was successfully download and installed on the EC2 Instance. This software uses IPv6 for communication. After the software was installed , and you were trying to access the software via IPv6 on port 80, you were not able to do so. What needs to be done to alleviate this issue?

Answer options:

A.Add an inbound rule to your security group that allows inbound traffic on port 80 for ::/0.
B.Add an internet gateway for the instance.
C.Add an inbound rule to your security group that allows inbound traffic on port 80 for 0.0.0.0/0.
D.Add an egress-only internet gateway.

Answer – A
Since the application works on IPv6, you need to ensure that the port is open for all Ipv6 addresses as ::/0
For more information on authorizing access to your instances , please visit the below URL:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/authorizing-access-to-an-instance.html