What does the following command do with respect to the Amazon EC2 security groups? ec2-
revoke RevokeSecurityGroupIngress
A.
Removes one or more security groups from a rule.
B.
Removes one or more security groups from an Amazon EC2 instance.
C.
Removes one or more rules from a security group.
D.
Removes a security group from our account.
Explanation:
Removes one or more ingress rules from a security group. The values that you specify in the
revoke request (for example, ports) must match the existing rule’s values for the rule to be
removed.
http://docs.aws.amazon.com/cli/latest/reference/ec2/revoke-security-group-ingress.html