Which two options are control plan protocols? (Choose two)

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Which two options are control plan protocols? (Choose two)
A . BGP
B . DARP
C . NAT
D . SMTP
E . CoPP

Answer: AB

Explanation:

Explanation: The control plane: The control plane is the brain of the router. It consists of dynamic IP routing protocols (that is OSPF, IS-IS, BGP, and so on), the RIB, routing updates, in addition to other protocols such as PIM, IGMP, ICMP, ARP, BFD, LACP, and so on. In short, the control plane is responsible for maintaining sessions and exchanging protocol information with other router or network devices.

Reference: http://www.ciscopress.com/articles/article.asp?p=2272154&seqNum=3

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