The self-contained APs are autonomous, or independent, because they are separate from other network devices and even other autonomous AP,these are referred to as the Fat APs
Explanation:
A fat AP wireless access point is used to manage wireless client. In other words it can provide wireless access independently.It can handle encryption,authentication,and management of communication of client devices.
There are two types of wireless access points, intelligent (fat) and thin wireless access points.
A thin access point can be a radio and antenna, that is controlled by a wireless switch.
Some role of Fat APs include