单项选择题
A.The voice traffic cannot be forwarded to the distribution layer.
B.The voice traffic cannot use 802.1p priority tagging.
C.Port security cannot be enabled on the switch that is attached to the IP phone.
D.Quality of service cannot be applied for the voice traffic.
单项选择题 Refer to the exhibit. Why does the trust state of interface FastEthernet 0/3 show "not trusted"？ （）
单项选择题 Refer to the exhibit. What statement is true about the configuration on switch CAT1？（）
多项选择题 You need to configure a new Cisco router to be installed in the Company VOIP network. Which three interface commands will configure the switch port to support a connected Cisco phone and to trust the CoS values received on the port if CDP discovers that a Cisco phone is attached？ （）
