A.Multicast source: the sender of information, who needs to join the multicast group to provide the forwarding of multicast group messages

B.Multicast group members: Multicast group members can be widely distributed anywhere in the network

C.Multicast group: a set identified by an IP multicast address

D.Multicast router: router or layer three switch that supports the three-layer multicast function

A.False

B.Ture

A.Double-barrel double-speed

B.Three-barrel single-speed

C.Double-barrel single-speed

D.Single-barrel single-speed

A.One of the two routers can be level-1-2, and the other can be level-1.

B.Both routers are of level-1 type.

C.The two routers keep the default type.

D.The ISIS process numbers of the two routers must be the same.

A.Level-1 LAN IH is sent by multicast

B.P2P IIH and LAN IIH are exactly the same

C.P2P IH has no Priority field

D.Level-1 LAN IIH does not contain System ID