Which of the following is a GRE Tunnel characteristic?

A. GRE impose more CPU overhead than IPSec on VPN gateways

B. GRE tunnels can run through IPsec tunnels.

C. GRE Tunnel doesn't have support for IPv6

D. GRE consists of two sub-protocols: Encapsulated Security Payload (ESP) and Authentication Header (AH).








 

Suggested Answer: B

If you run an IPsec tunnel through a GRE tunnel, then we call it as "IPsec over GRE"

This question is in 300-101 Cisco Implementing Cisco IP Routing (ROUTE) Exam
For getting Cisco Certified Network Professional (CCNP) Routing and Switching Certificate




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