单项选择题
A. Untagged ingress traffic will be dropped.
B. Ingress traffic from the host will be tagged with theCoS value of 5.
C. Tagged and untagged ingress traffic will be carried on VLAN 1.
D. Untagged ingress traffic will be marked with the default CoS value of the port.
单项选择题 The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1. What does this command do？（）
多项选择题 Refer to the exhibit. Which three statements are true about the voice VLAN configuration of the Catalyst switch？ （）
多项选择题 The Cisco AutoQoS feature is being used throughout the Company VOIP network. Which three statements about this feature are true？（）
