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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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更多 “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.” 相关考题
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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？ （）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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Which two statements are true about voice VLANs？（）A、Voice VLANs are only used when connecting an IP phone and a host to distinct switch portsB、Access ports that are configured with voice VLANs will always trust the CoS that is received from IP phonesC、Access ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phoneD、Voice VLANs are configured using the switchport voice vlan vlan-ID interface configuration commandE、Voice 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 portF、Enabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings
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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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考题
多选题You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）AWhen the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.BEnabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.CWhen voice VLANs are configured on a trunk link， UplinkFast must also be enabled.DVoice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.EEnabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.
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 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
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考题
多选题Which two statements are true about the configuration of voice VLANs？（）AStatic secure MAC addresses can be configured in conjunction with voice VLANs.BPortFast is automatically enabled when voice VLANs are configured.CPortFast must be manually configured when voice VLANs are configured.DVoice VLANs are typically configured on uplink ports.EVoice VLANs are typically configured on access ports.
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考题
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the VoIP endpoints have the intelligence to set up and control callsB
Call setup and control functionality is centralized in one call agent or clusterC
Call setup and control resides in call agents that are distributed throughout the networkD
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考题
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Static VLANs are being used on the Company network. What is true about static VLANs？（）A
Devices use DHCP to request their VLAN.B
Attached devices are unaware of any VLANs.C
Devices are assigned to VLANs based on their MAC addresses.D
Devices are in the same VLAN regardless of which port they attach to.
考题
单选题Which statement is true about logical units?（）A
Logical units are similar to VLANs used by other vendors.B
A logical unit is required for transit interfaces.C
Frame Relay encapsulation supports one logical unit.D
Link speed and duplex are configured in the logical unit properties.
考题
单选题A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）A
For the two vlans to communicate，a network statement for the trunk interface needs to be added to the OSPF configuration.B
For the two vlans to communicate， a network statement for each subinterface needs to be added to the OSPF configuration.C
Direct inter-vlan communication does not require OSPFD
OSPF cannot be used if router-on-a-stick is configured on the router
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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