多項選擇題

You have configured voice VLANs on Catalyst switch R1.
Which two statements are true about the operation of voice VLANs on this device？（）

A. When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.
B. Enabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.
C. When voice VLANs are configured on a trunk link， UplinkFast must also be enabled.
D. Voice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.
E. Enabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.

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單項選擇題

Refer to the exhibit.
Which statement is true about the configuration that is shown？（）

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.

單項選擇題

The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1.
What does this command do？（）

A.It disables the trust boundary feature because the switch knows a Cisco IP phone is attached.
B.The switch assigns a CoS value of 5 to incoming packets.
C.If a Cisco IP phone is attached and removed， the switch continues to trust the CoS values as long as the switch is not rebooted.
D.It turns on STP to see if a Cisco IP phone is attached.
E.If a Cisco IP phone is attached， the switch trusts the CoS.
F.None of the other alternatives apply.

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You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）

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Refer to the exhibit. Which statement is true about the configuration that is shown？ （）

The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1. What does this command do？（）

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You have configured voice VLANs on Catalyst switch R1.
Which two statements are true about the operation of voice VLANs on this device？（）

Refer to the exhibit.
Which statement is true about the configuration that is shown？（）

The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1.
What does this command do？（）