题目内容
Refertotheexhibit.AjuniornetworkadministratorwasgiventhetaskofconfiguringportsecurityonSwitchAtoallowonlyPC_Atoaccesstheswitchednetworkthroughportfa0/1.Ifanyotherdeviceisdetected,theportistodropframesfromthisdevice.TheadministratorconfiguredtheinterfaceandtesteditwithsuccessfulpingsfromPC_AtoRouterA,andthenobservestheoutputfromthesetwoshowcommands.WhichtwoofthesechangesarenecessaryforSwitchAtomeettherequirements?()
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