AnIPphoneconnectsausertoaswitchasshownbelow:Basedonthediagramshownabove,whichsta
A.APCconnectedtoaswitchportviaanIPphoneisunawareofthepresenceofthephone
B.ThetrafficonthevoiceVLANmustbetaggedwith802.1pencapsulationinordertocoexistonthesameLANsegmentwithaPC
C.Toimprovethequalityofthevoicetraffic，nootherdevicesshouldbeattachedtotheIPphone
D.ThevoiceVLANmustbeconfiguredasanativeVLANontheswitch
E.APCconnectedtoaswitchportviaanIPphonemustsupportatrunkingencapsulation
正确答案：参考A
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