Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) — Question 333

How is a preshared key “Test” for all the remote VPN routers configured in a DMVPN using GRE over IPsec set up?

Answer options

• A. authentication pre-share Test address 0.0.0.0 0.0.0.0
• B. set pre-share Test address 0.0.0.0 0.0.0.0
• C. crypto ipsec key Test address 0.0.0.0 0.0.0.0
• D. crypto isakmp key Test address 0.0.0.0 0.0.0.0

Correct answer: D

Explanation

The correct answer is D because the command 'crypto isakmp key' is specifically used to configure preshared keys for IKE negotiations in IPsec. The other options either use incorrect commands or refer to methods that do not establish the preshared key for DMVPN connections.