AnIPphoneconnectsausertoaswitchasshownbelow:Basedonthediagramshownabove,whichstatementistrueaboutthe

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A.APCconnectedtoaswitchportviaanIPphoneisunawareofthepresenceofthephone

B.ThetrafficonthevoiceVLANmustbetaggedwith802.1pencapsulationinordertocoexistonthesameLANsegmentwithaPC

C.Toimprovethequalityofthevoicetraffic,nootherdevicesshouldbeattachedtotheIPphone

D.ThevoiceVLANmustbeconfiguredasanativeVLANontheswitch

E.APCconnectedtoaswitchportviaanIPphonemustsupportatrunkingencapsulation

参考答案:

参考A

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