Implementing and Operating Cisco Security Core Technologies (SCOR) — Question 157

A network engineer is configuring DMVPN and entered the crypto isakmp key cisc0383320506 address 0.0.0.0 command on host A. The tunnel is not being established to host B. What action is needed to authenticate the VPN?

Answer options

• A. Change the password on host A to the default password
• B. Enter the command with a different password on host B
• C. Enter the same command on host B
• D. Change isakmp to ikev2 in the command on host A

Correct answer: C

Explanation

The correct answer is C because both hosts need to have matching ISAKMP key configurations for successful authentication in a DMVPN setup. Options A and B do not address the requirement for matching keys, and option D incorrectly changes the protocol, which is not necessary for this situation.