Which security measures can protect the control plane of a Cisco router? (Choose two.)

A.
CPPr

B.
Parser views

C.
Access control lists

D.
Port security

E.
CoPP

Explanation:
BD
Three Ways to Secure the Control Plane
+ Control plane policing (CoPP): You can configure this as a filter for any traffic destined to an IP address on
the router itself.
+ Control plane protection (CPPr): This allows for a more detailed classification of traffic (more than CoPP) that
is going to use the CPU for handling.
+ Routing protocol authentication
Source: Cisco Official Certification Guide, Table 10-3 Three Ways to Secure the Control Plane , p.269