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单选题
What protocol does an IP phone use to learn the voice VLAN ID it should use for voice traffic？（）
A
VTP
B
802.1 q
C
CDP
D
Skinny Station Protocol
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单选题What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）A
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单选题What does the interface subcommand switchport voice vlan 222 indicate？（）A
The port is configured for both data and voice traffic.B
The port is fully dedicated to forwarding voice traffic.C
The port will operate as an FXS telephony port.D
Voice traffic will be redirected to VLAN 222.
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单选题Refer to the exhibit. Which statement is true about a voice VLAN？（）A
Physically the voice network and the data network are separate.B
The voice traffic will normally be on a different IP subnet than will the data traffic.C
End user intervention is necessary to place the phone into the proper VLAN.D
The same security policy should be implemented for both voice and data traffic.E
The data VLAN must be configured as the native VLAN.
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单选题You are a network administrator of a large investor relations company that uses a switchednetwork to carry both data and IP telephony services. Why should you carry voice traffic on aseparate VLAN？（）A
IP phones require inline power and must be in separate VLAN to receive inline powerB
IP telephony applications require prioritization over other traffic as they are more delaysensitiveC
IP phones can only receive IP addresses through DHCP if they are in separate VLAND
The CDP frames from the IP phone can only be recognized by the switch if the phone is in anauxiliary vlan
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单选题Company.com is planning for an HACMP cluster and wants to know more about the network requirements. The plan is to use IPAT via IP aliasing and heartbeating via IP aliasing to preserve the corporate IP addresses. Currently the customer uses a separate VLAN for each individual subnet. Which statement best describes how HACMP co-exists with VLAN’s in this configuration？（）A
All subnets in use by HACMP must be in the same VLAN.B
All subnets in sue by HACMP must be in a different VLAN.C
HACMP does not support multiple subnets when using heartbeating via IP aliasing.D
HACMP does not support the use of VLAN.
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多选题Which two statements are true about voice VLANs？（）AVoice VLANs are only used when connecting an IP phone and a host to distinct switch portsBAccess ports that are configured with voice VLANs will always trust the CoS that is received from IP phonesCAccess ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phoneDVoice VLANs are configured using the switchport voice vlan vlan-ID interface configuration commandEVoice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the portFEnabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings
考题
单选题When you enable port security on an interface that is also configured with a voice VLAN， what is the maximum number of secure MAC addresses that should be set on the port？（）A
No more than one secure MAC address should be set.B
The default will be set.C
The IP phone should use a dedicated port， therefore only one MAC address is needed per port.D
No value is needed if the switchport priority extend command is configured. E
No more than two secure MAC addresses should be set.
考题
单选题Refer to the exhibit. Which statement is true about a voice VLAN？（）A
Physically the voice network and the data network are separateB
The voice traffic will normally be on a different IP subnet than will the data trafficC
End user intervention is necessary to place the phone into the proper VLAND
The same security policy should be implemented for both voice and data trafficE
The data VLAN must be configured as the native VLAN
考题
单选题Which statement is true about voice VLANs？ （）A
When the voice VLAN feature is enabled， all untagged voice and data traffic is sent through the voice VLAN.B
The voice VLAN feature is enabled by default.C
The IP phone overrides the priority of all incoming data traffic （tagged and untagged） and sets the CoS value to 0.D
The default CoS value is 1 for incoming voice and data traffic.
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