Examine the following protocols, which two are used for IP Security?

Examine the following protocols, which two are used for IP Security?
A . Generic Routing Encapsulation (GRE) and Internetwork Packet Exchange (IPX)(EIGRP)
B . Border Gateway Protocol (BGP) and Enhanced Interior Gateway Routing Protocol
C . Authentication Header (AH) and Encapsulating Security Payload (ESP)
D . Virtual Private Dial-Up Network (VPDN) and GRE

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Answer: C