简答题 Why does the bgp summary command always carry the as-set keyword？

单项选择题Refer to the exhibit. Look at the command output. What can you use to prevent this behavior？（）

A.UDLD
B.spanning-tree loopguard
C.VTP mode transparent
D.switchport mode desirable

问答题PQmajordisadvantage？

问答题Inbroadcastnetworkthefirstadjofospfis2-way？why？thisquestionwillgiveyouapicture.

单项选择题Refer to the exhibit. Look at the command output. Assume that there is no other path，and the configuration is correct. What would be the consequences of this situation？（）

A.Users in SW1 can ping SW2 but not vice versa.
B.Users in SW2 can ping SW1 but not vice versa.
C.Users in SW1 and SW2 can ping each other.
D.Users in SW1 and SW2 cannot ping each other.

单项选择题InordertoconfiguretworoutersasanycastRPs，whichoftheserequirements，ataminimum，mustbesatisfied？（）

A.Multicast Source Discovery Protocol mesh-groups must be configured between the two anycast RPs.
B.The RPs must be within the same IGP domain.
C.Multicast Source Discovery Protocol must be configured between the two anycast RPs.
D.The two anycast RPs must be IBGP peers.