After an Amazon VPC instance is launched, can I change the VPC security groups it belongs
to?
A.
No. You cannot.
B.
Yes. You can.
C.
Only if you are the root user
D.
Only if the tag “VPC_Change_Group” is true
Explanation:
Security groups are associated with network interfaces. After you launch an instance, you can
change the security groups associated with the instance, which changes the security groups
associated with the primary network interface (eth0).