Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to an
interface? (Choose all that apply.)

A.
The interface must be configured as a Multilink PPP interface.

B.
The correct bandwidth should be configured on the interface.

C.
A QoS policy must not be currently attached to the interface.

D.
CEF must be enabled.

E.
AutoQoS must be enabled globally before it can be enabled on the interface.

F.
An IP address must be configured on the interface if its speed is equal to or less than 768 kbps.

Explanation:
Before using the auto discovery qos command at an interface or an ATM PVC, ensure that the
following prerequisites have been met:
• Cisco Express Forwarding (CEF) must be enabled.
• If the interface or subinterface has a link speed of 768 kpbs or lower, configure the primary or
secondary IP address of the interface by using the ip address command.
• For all interfaces or subinterfaces, configure the amount of bandwidth by using the bandwidth
command. The amount of bandwidth allocated should be based on the link speed of the interface.
• A QoS policy must not be currently attached to the interface