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Jill,atechnician,isinstallingseveralPCsinahomethatispre-wiredwithEthernettosevenrooms.InthewiringclosetalltheEthernetcablesarehangingfreeandarenotlabeled. Whichofthefollowingtoolswouldthetechnicianusetolocatethecablethatrunstoeachroom?（）

A. Extensionmagnet
B. Tonerprobe
C. Multimeter
D. OpticalTimeDomainReflectometer(OTDR)

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Jill,atechnician,isinstallingseveralPCsinahomethatispre-wiredwithEthernettosevenrooms.InthewiringclosetalltheEthernetcablesarehangingfreeandarenotlabeled. Whichofthefollowingtoolswouldthetechnicianusetolocatethecablethatrunstoeachroom?（）

A. Extensionmagnet B. Tonerprobe C. Multimeter D. OpticalTimeDomainReflectometer(OTDR)

以下属于离散变量的是（）。

WhichtwoconfigurationcommandsarerequiredtodirectdebuglevelconsoleloggingtoyourcurrentERXEdgeRouterTelnetsession?（）

WhichstatementiscorrectaboutaRoutingPolicyterm?（）

WhichofthefollowingMicrosoftencryptionsoftwareprovidestheHIGHESTlevelofsecurityforPCsrunningWindowsVistaEnterpriseorUltimateVista?（）

A. Extensionmagnet
B. Tonerprobe
C. Multimeter
D. OpticalTimeDomainReflectometer(OTDR)