Which cause of this behavior is true?

Refer to the Exhibit:

Users at each end of this VPN tunnel cannot communicate with each other.

Which cause of this behavior is true?
A . The Diffie-Hellman groups configured are different.
B . The pre shared key does not match.
C . Phase 1 is not completed and troubleshooting is required.
D . The issue occurs in phase 2 of the tunnel.

View Answer

Answer: C