In the VRP to configure Frame Relay sub-interface, optional interface type which sub-

Which of the following IPv6 addresses has a Solicited-node mutticast address of FF02::1 :FF12:12

Which of the following procedures will be used ICMP protocol?

The data link layer is encapsulated in PPP. The IP addresses at both ends of the link cannot be in the same network segment.

Refer to the graphic. RTA and RTB have established a GRE tunnel, but only RTA has enabled the keepalive function. When RTB receive a keepalive message from RTA, how will RTB respond?