单项选择题
InwhichofthefollowingscenarioswouldMACfilteringbeMOSTeffectiveasapartofwirelesssecurity?()
A.Apublicplacewhereguestsarefreetoaccessthewirelessnetwork.
B.Asmallofficewhereadefinednumberofspecificwirelessdevicesareused.
C.Ameetingroomwherevariouscompanyuserswillaccessthewirelessnetworkduringmeetings.
D.AnofficewheresomeusersareunabletouseWPAencryptionduetoolderwirelesscardssotheyuseMACfiltering.