What is the problem according to this command output?

Refer to the exhibit.

A network administrator configured a site-to-site VPN tunnel between two Cisco IOS routers, and hosts are unable to communicate between two sites of VPN. The network administrator runs the debug crypto isakmp sa command to track VPN status.

What is the problem according to this command output?
A . hashing algorithm mismatch
B . interesting traffic was not applied
C . authentication key mismatch
D . encryption algorithm mismatch

View Answer

Answer: C