A __________ is the concept of allowing (or disallowing) an entity such as a user, group, or role some type of access to one or more resources.
To help you manage your Amazon EC2 instances, images, and other Amazon EC2 resources, you can assign your own metadata to each resource in the form of____________
True or False: When you add a rule to a DB security group, you do not need to specify port number or protocol.