题目内容

材料保管中的四号定位就是定仓库号:货架号:架层号:货位号(简称库号:架号:层号:位号)。()

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WhichtwostatementsaretrueaboutBPDUport-guardandBPDUfiltering?()

A. BPDUport-guardcanbeenabledglobally,whereasBPDUfilteringmustbeenabledonaper-interfacebasis.
B. Whengloballyenabled,BPDUport-guardandBPDUfilteringapplyonlytoPortFastenabledports.
C. Whengloballyenabled,BPDUport-guardandBPDUfilteringapplyonlytotrunking-enabledports.
D. WhenaBPDUisreceivedonaBPDUport-guardenabledport,theinterfacegoesintotheerr-disabledstate.
E. WhenaBPDUisreceivedonaBPDUfilteringenabledport,theinterfacegoesintotheerr-disabledstate.
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