A.The sending intervals of Hello messages between the two routers are inconsistent.

B.The two routers are set with different Process IDs

C.The two directly connected interfaces use different network types.

D.The dr-priority of the two directly connected interfaces is set to 0.

E.Two routers are configured with the same Router ID.

F.The two directly connected interfaces use the p2p network type, but the IP packet with the destination IP address 224.0.0.6 is refused to be transmitted.

A.When Backup receives the VRRP message sent by Master, it can determine whether the status of Master is normal.

B.Backup will discard IP packets whose destination MAC address is the virtual MAC address.

C.When receiving a VRRP message with priority 0, Backup waits for Skew_time and then directly switches to Master.

D.Backup will respond to IP packets whose destination IP address is the virtual IP address.

A.Traditional unicast technology cannot solve the problem of single-point transmission and multi-point reception. Only multicast technology can solve it.

B.In multicast application scenarios, the data packets sent by the multicast source are based on the UDP protocol, so the reliable transmission of data cannot be guaranteed.

C.Multicast protocols must be based on unicast routing protocols (such as OSPF protocol) to function properly.

D.The value range of multicast IP address is: 224.0.0.0~240.255.255.255.

A.FALSE

B.TRUE