题目内容
(请给出正确答案)
[主观题]
()是家鸡的祖先,我国自古就有驯化。
A.BPDUguardcanbeusedtopreventinvalidBPDUsfrompropagatingthroughoutthenetwork.
B.BPDUguardcanguaranteeproperselectionoftherootbridge.
C.BPDUguardcanbeutilizedtopreventtheswitchfromtransmitteingBPDUsandincorrectlyalteringtherootbridgeelection.
D.BPDUguardcanbeutilizedalongwithPortFasttoshutdownportswhenaswitchisconnectedtotheport.
E.Noneoftheotheralternativesapply
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