单项选择题
A.Effectively， the trust boundary has been moved to the PC attached to the IP phone
B.The computer is now establishing theCoS value and has effectively become the trust boundary
C.The IP phone is enabled to override with aCoS value of 3 the existing CoS marking of the PCattached to the IP phone
D.The switch will no longer tag incoming voice packets and will extend the trust boundary to thedistribution layer switch
E.RTP will be used to negotiate aCoS value based upon bandwidth utilization on the link
单项选择题 Based on the graphic below， which Catalyst switch interface command should be issued in orderfor the switch to instruct the phone to override the incoming CoS from the CK-PC before sendingthe packet to the switch？（）
多项选择题 YouneedtoconfigureanewCiscoroutertobeinstalledintheVOIPnetwork.WhichthreeinterfacecommandswillconfiguretheswitchporttosupportaconnectedCiscophoneandtotrusttheCoSvaluesreceivedontheportifCDPdiscoversthataCiscophoneisattached？（）
单项选择题 Look at the graphic below， the connectivity between Cisco IP phone access port and theworkstation CK-PC has been established， how to manage the traffic？（）
