210-260 · Question #76
Which two features are commonly used CoPP and CPPr to protect the control plane? (Choose two.)
The correct answer is A. QoS B. traffic classification. Control Plane Policing (CoPP) and Control Plane Protection (CPPr) both leverage the router's QoS framework to protect the control plane from excessive or malicious traffic (e.g., DoS attacks targeting the CPU). The two foundational features they rely on are: (1) Traffic…
Question
Which two features are commonly used CoPP and CPPr to protect the control plane? (Choose two.)
Options
- AQoS
- Btraffic classification
- Caccess lists
- Dpolicy maps
- Eclass maps
- FCisco Express Forwarding
How the community answered
(54 responses)- A94% (51)
- D2% (1)
- E4% (2)
Explanation
Control Plane Policing (CoPP) and Control Plane Protection (CPPr) both leverage the router's QoS framework to protect the control plane from excessive or malicious traffic (e.g., DoS attacks targeting the CPU). The two foundational features they rely on are: (1) Traffic classification - identifying and grouping control-plane traffic by type (e.g., routing protocol packets, management traffic, ICMP) using class maps; and (2) QoS - applying rate-limiting, policing, or dropping actions to each classified traffic class via policy maps. While class maps and policy maps (options D and E) are the specific IOS constructs used to implement these features, QoS and traffic classification are the overarching feature categories that CoPP/CPPr are built upon, making A and B the best answers at the conceptual level tested by this question.
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