Which two features are commonly used by CoPP and CPPr to protect the control plane?

Which two features are commonly used by CoPP and CPPr to protect the control plane?
A . QoS
B . traffic classification
C . access lists
D . policy maps
E . class maps
F . Cisco Express Forwarding

Answer: A,B

Explanation:

For example, you can specify that management traffic, such as SSH/HTTPS/SSL and so on, can be ratelimited (policed) down to a specific level or dropped completely. Another way to think of this is as applying quality of service (QoS) to the valid management traffic and policing to the bogus management traffic.

Source: Cisco Official Certification Guide, Table 10-3 Three Ways to Secure the Control Plane,

p.269