ThenetworkadministratorhasenabledBPDUguardontheLAN.Whyisaneffectivewaytopreventanunauthorizedrogueswitchfromalteringthespanning-treetopologyofthisnetwork?()

A.BPDUguardcanbeusedtopreventinvalidBPDUsfrompropagatingthroughoutthenetwork. B.BPDUguardcanguaranteeproperselectionoftherootbridge. C.BPDUguardcanbeutilizedtopreventtheswitchfromtransmitteingBPDUsandincorrectlyalteringtherootbridgeelection. D.BPDUguardcanbeutilizedalongwithPortFasttoshutdownportswhenaswitchisconnectedtotheport. E.Noneoftheotheralternativesapply

时间:2024-04-03 15:07:44

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