单项选择题

WhichportrolehasinterfaceFa0／2ofswitch1adoptedforVLAN47？（）

A.Rootport
B.Nondesignedport
C.Designatedport
D.Backupport
E.Alternateport
F.Noneoftheotheralternativesapply
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单项选择题
Thefollowingwasconfiguredonaswitch：Switch（config）spanning－treeportfastbpdufilterdefaultWhatistheeffectofthisconfigurationcommand？（）
A.IfBPDUsarereceivedbyaportconfiguredforPortFast，theyareignoredandnonearesent.
B.ThecommandwillenableBPDUfilteringonallportsregardlessofwhethertheyareconfiguredforBPDUfilteringattheinterfacelevel.
C.IfBPDUsarereceivedbyaportconfiguredforPortfast，theportwilltransitiontoforwardingstate.
D.IfBPDUsarereceivedbyaportconfiguredforPortFast，thenPortFastisdisabledandtheBPDUsareprocessednormally.
E.Noneoftheotheralternativesapply.
单项选择题
OnanAironetcard，LED0andLED1areblinkingalternately.Whatdoesthisindicate？（）
A.TheAironetcardisinpowersavemode.
B.TheAironetcardislookingforanetworkassociation.
C.TheAironetcardisjoinedtoanetwork，butthereisnonetworkactivity.
D.TheAironetcardisjoinedtoanetwork，andthereisnetworkactivity.
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