多項選擇題

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？（）

A.switchport voice vlan vlan-id
B.mls qos trust device cisco-phone
C.switchport priority extend cos_value
D.mls qos trust cos
E.mls qos trust override cos

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多項選擇題

Refer to the exhibit.
Which three statements are true about trust boundaries in the campus network？（）

A.Classification and markingoccur using 802.1ab QoS bits before reaching the trust boundary.
B.A device is trusted if it correctly declassifies packets.
C.A device is trusted if it correctly classifies packets.
D.Network trust boundaries are automatically configured in IOS version 12.3 and later.
E.The outermost trusted devices represent the trust boundary.
F.For scalability， classification should be done as close to the edge as possible.

多項選擇題

Refer to the exhibit.
Which two statements are true about the required switch configurations to support a voice VLAN？（）

A.CDP must be disabled on the switch port to prevent interference between CDP messages and voice traffic.
B.Port security cannot be configured on a port that is configured for a voice vlan.
C.Static secure MAC addresses should be configured on voice vlan ports to prevent access by devices other than IP phones.
D.CDP must be enabled on the switch port to allow configuration information to be passed to the IP phone.
E.Portfast must be enabled on the switch port.
F.802.1x authentication cannot be configured on a port configured for a voice vlan.

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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？ （）

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Refer to the exhibit. Which three statements are true about trust boundaries in the campus network？（）

Refer to the exhibit. Which two statements are true about the required switch configurations to support a voice VLAN？（）

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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？（）

Refer to the exhibit.
Which three statements are true about trust boundaries in the campus network？（）

Refer to the exhibit.
Which two statements are true about the required switch configurations to support a voice VLAN？（）