AWS Certified SysOps Administrator SOA-C01 – Question511

Can you change the security groups associated with the primary network interface (eth0) of an EC2 instance running inside a VPC?

A. Yes
B. Only if the instance is stopped
C. Only when the instance is launched
D. No

Correct Answer: A

Explanation:

Explanation: After you launch an instance in a VPC, you can change its security groups. Security groups are associated with network interfaces. Changing an instance’s security groups changes the security groups associated with the primary network interface (eth0) Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-se…