A.You can configure the source IP address for load balancing in the enabled link aggregation group by using the following command: Interface eth-trunk 1 Load-balance src-dst-ip

B.You can prevent the Eth-Trunk interface from frequently flapping due to physical link reasons. Interface eth-trunk 1 Lacp preempt enable Lacp preempt delay delay-time

C.You can add member interfaces to the link aggregation group enabled by the following command: Interface Gigabitethernet0/0/1 Debug Interface Gigabitethernet0/0/1 Trunkport Gigabitethernet0/0/ Interface Gigabitethernet0/0/1 Undo shutdown

D.You can remove a member interface in an enabled link aggregation group by using the following command: Interface Gigabitethemnet0/0/0 Debug Interface Gigabitethernet0/0/1 Undo eth-trunk 1 Interface Gigabitetheret0/0/ Undo shutdown

A.300 4200

B.3100

C.100

D.1234 1400

A.Type4

B.Type1

C.Type5

D.Type3

E.Type2

A.The PIM Join message is sent every 60 seconds to refresh the status of the upstream router mroute for the multicast tree

B.The PIM Join message is sent every 3 minutes to show the status of the new upstream router mroute for the multicast tree

C.The PIM Join message is only sent when the multicast tree is established for the first time

D.The upstream router sends a PIM Join confirmation in response to each PIM Join message received from the downstream router

A.False

B.True