简答题 you want to view the status of a frame relay connection. How to display the status of a Frame-Relay PVC？

多项选择题ThenetworkadministratoristryingtoaddSwitch1tothenetwork，butthe802.1Qtrunkisnotcomingup.Switch1waspreviouslytestedinthelaboratoryanditstrunkconfigurationworkedfine.Whatarethreepossiblecausesofthisproblem？（）

A.The trunking configuration mode on Switch1 is set to Off.
B.The trunking configuration mode on the other end is set to On.
C.The trunking configuration mode on the other end is set to Desirable.
D.Cisco Discovery Protocol is not running on the other end.
E.There is a VTP domain name mismatch.
F.Switch1 does not support 802.1Q.

问答题WhatisthePMTUDforIPv6network？

问答题whatisaroutereflector？

多项选择题Refer to the exhibit. Two ISPs have decided to use MSDP and configured routers X and Y (both are PIM RPs) as MSDP peers. In the domain of ISP B, PC A has sent an IGMP membership report for the group 224.1.1.1 and PC B has sent an IGMP membership report for the group 224.5.5.5. Assuming that the MSDP peering relationship between routers X and Y is functional, and given the partial configuration output shown from router X, which two of these statements are true?（）

A.Router X will contain an entry for 224.1.1.1 in its SA cache and will also have an installed （S，G） entry for this in its mroute table.
B.Router X will not contain an entry for 224.1.1.1 in its SA cache but will have an installed （*，G） entry for this in its mroute table.
C.Router X will not contain an entry for 224.5.5.5 in its SA cache but will have an installed （S，G） entry for this in its mroute table.
D.Router X will not contain an entry for 224.5.5.5 in its SA cache but will have an installed （*，G） entry for this in its mroute table.
E.Router X will have no entries for 224.5.5.5 in neither its SA cache nor in its mroute table.
F.Router X will have no entries for 224.1.1.1 in neither its SA cache nor in its mroute table.

问答题whatismulticastsnooping？