The exhibit displays set ike-version 2, which strictly requires the remote peer to support IKEv2 negotiation. The configuration also features set mode-cfg disable, indicating the hub will not dynamically assign an IP address to the connecting spoke. Consequently, administrators must manually assign user-defined overlay IP addresses to the tunnel interfaces on both ends. To enable dynamic routing protocols to establish neighbor adjacencies over these manually assigned IP addresses, the configuration uses set exchange-interface-ip enable. This specific command is a Fortinet-proprietary feature that shares the user-defined overlay interface IP addresses between peers via IKEv2 payloads, removing the requirement for standard mode-config for IP resolution.

A. Incorrect because the set mode-cfg disable command explicitly prevents the hub from dynamically assigning or providing a tunnel interface IP address to the spoke side.

B. Incorrect because exchange-interface-ip utilizes a Fortinet-proprietary IKEv2 payload to exchange interface IP addresses, meaning the remote peer must be a compatible FortiGate, not a third-party device.

Fortinet Technologies Inc. "FortiOS 7.2 Administration Guide: IPsec VPN." Section: IKEv2 exchange-interface-ip.

Fortinet Technologies Inc. "FortiOS 7.2 CLI Reference." Section: config vpn ipsec phase1-interface.