A.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode ON
B.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode to OFF
C.The firewall does not support Cisco Discovery Protocol. You should set the switchport trunk mode as auto
D.The firewall does not support DTP.You should set the switchport trunk mode to ON

A.The switches are not the same model.
B.You are not using the correct SFP.
C.You are not using correct optical media converters.
D.Configuration should be modified， because the distance is longer.

A.The Layer 2 multicast address of the destination node
B.The solicited node multicast address of the destination node
C.The Layer 2 address of the destination node based on the destination IPv6 address
D.The IPv6 address of the destination node based on the destination Layer 2 address

A.Tunnel IPv6 over IPv4 to connect far-end IPv6 networks.
B.Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is not possible.
C.Explain why configuring IPv4 and IPv6 at the same time over the same LAN interface is possible.
D.What is the meaning of EUI-64 and how does it work？
E.Tunnel IPv4 over IPv6 to connect far-end IPv4 networks.

A.EIGRP will not be accepted when configured on the actual RIPv2 routers.
B.OSPF will no longer be used in the routing table， because you only have EIGRP internal routes running.
C.OSPF will no longer be used in the routing table， because you only have EIGRP external routes running.
D.RIPv2 will populate its RIP database but not its routing table， because you only have EIGRP external routes running.
E.RIPv2 will populate its RIP database but not its routing table， because you only have EIGRP internal routes running.
F.OSPF database will have RIPv2 routes.

A.1
B.2
C.4
D.6
E.8