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单选题
Refer to the exhibit. What is the effect on the trust boundary of configuring the command mls qos trust cos on the switch port that is connected to the IP phone？（）
A
Effectively the trust boundary has been moved to the IP phone.
B
The host is now establishing the CoS value and has effectively become the trust boundary.
C
The switch is rewriting packets it receives from the IP phone and determining the CoS value.
D
The switch will no longer tag incoming voice packets and will trust the distribution layer switch to set theCoS
E
RTP will be used to negotiate a CoS value based upon bandwidth utilization on the link.
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更多 “单选题Refer to the exhibit. What is the effect on the trust boundary of configuring the command mls qos trust cos on the switch port that is connected to the IP phone？（）A Effectively the trust boundary has been moved to the IP phone.B The host is now establishing the CoS value and has effectively become the trust boundary. C The switch is rewriting packets it receives from the IP phone and determining the CoS value. D The switch will no longer tag incoming voice packets and will trust the distribution layer switch to set theCoSE RTP will be used to negotiate a CoS value based upon bandwidth utilization on the link.” 相关考题
考题
When you enter the interface command auto qos voip cisco－phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?()
A. by snooping the CoS marking on the incoming framesB. by using RTP hello messages between the switch port and the Cisco IP PhoneC. by using CDPD. by using DHCP snoopingE. by snooping the incoming 802.1Q VLAN tag
考题
CiscoAutoQoStakestheinterfacetypeandbandwidthintoconsiderationwhenconfiguringwhichthreeQoSfeatures?()
A.voice compression methodologyB.LLQC.CRTPD.routing protocolE.LFIF.trust boundary
考题
Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint trunk to another switch. Based on the output shown, What is the reason the trunk does not form, even thought the proper cabling has been attached?（）A.VLANs have not been created yetB.An IP address must be configured for the portC.The port is currently configured for access modeD.The correct encapsulation type has not been configuredE.The no shutdown command has not been entered for the port
考题
A network is deployed using best practices of the enterprise campus network model， including users with desktop computers connected via IP phones. Given that all components are QoS-capable， where are the two optimal locations for trust boundaries to be configured by the network administrator？（）A、hostB、IP phoneC、access layer switchD、distribution layer switchE、core layer switch
考题
When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）A、by snooping the CoS marking on the incoming framesB、by using RTP hello messages between the switch port and the Cisco IP PhoneC、by using CDPD、by using DHCP snoopingE、by snooping the incoming 802.1Q VLAN tag
考题
What are three of the functions that AutoQoS performs when it is configured on a switch？（）A、synchronizes FIFO， PQ， CQ， and MDRR， with WFQ， CBWFQ， and LLQB、enables strict priority queuing for voice traffic， and weighted round robin queuing for data trafficC、enables low latency queuing to ensure that voice traffic receives priority treatmentD、enforces a trust boundary on switch access ports and uplinks/downlinks E、modifies queue sizes as well as queue weights where required F、adjusts link speeds to adapt to QoS needs
考题
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.
考题
Which two statements correctly describe a Cisco WLC configuration of Wireless QoS Profiles Wired_QoS_Profiles for an implementation of DSCP or CoS deployment?（）A、It must always be set on all QoS profile types because this sets the type of markings as either CoS or DSCP.B、It is optional if the Cisco WLC attached switch operates on a trust DSCP model.C、It must be set if the Cisco WLC attached switch operates on a trust CoS model.D、It sets the EDCF queue used for the radio-transmitted frames.
考题
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
考题
You have been tasked with setting a trust boundary on the Company network. What is the basic function of this trust boundary？（）A、 Trust boundaries are points in the network where Layer 2 CoS markings are converted to Layer 3 DSCP or IP precedence markings.B、 Trust boundaries are a point in the network where QoS functionality begins and ends.C、 Trust boundaries determine whether certain types of traffic can pass.D、 Trust boundaries are a point in the network where decisions about CoS markings on incoming packets are made.E、 None of the other alternatives apply
考题
Cisco AutoQoS takes the interface type and bandwidth into consideration when configuring which three QoS features？（）A、voice compression methodologyB、LLQC、CRTPD、routing protocolE、LFIF、trust boundary
考题
You need to configure a new Cisco router to be installed in the VOIP network. Which threeinterface commands will configure the switch port to support a connected Cisco phone and to trustthe CoS values received on the port if CDP discovers that a Cisco phone is attached？（）A、switchport voice vlan vlan-idB、mls qos trust device cisco-phoneC、switchport priority extend cos_valueD、mls qos trust cosE、mls qos trust override cos
考题
A standalone wireless AP solution is being installed into the campus infrastructure. The access points appear to boot correctly， however， wireless clients are not obtaining correct access. You verify that the local switch configuration connected to the access point appears as the following： interface ethernet 0/1 switchport access vlan 10 switchport mode access spanning-tree portfast mls qos trust dscp What is the most likely issue causing the problem？（）A、QoS trust should not be configured on a port attached to a standalone AP.B、QoS trust for switchport mode access should be defined as "cos".C、switchport mode should be defined as "trunk" with respective QoS.D、switchport access vlan should be defined as "1".
考题
Which two statements are true about trust boundaries？（）A、Classifying and marking traffic should be done as close to the traffic source as possible. B、Classifying and marking traffic should be done at the distribution layer.C、Traffic is classified and marked as it travels through the network.D、If untrusted traffic enters a switch， it can be marked with a new QoS value appropriate for the policy in place.E、The trust boundary moves depending on the type of traffic entering the network.
考题
As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）A、using DHCP snoopingB、snooping the incoming 802.1Q VLAN tagC、using CDPD、snooping the CoS marking on the incoming frames
考题
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-idB、mls qos trust device cisco-phoneC、switchport priority extend cos_valueD、mls qos trust cosE、mls qos trust override cos
考题
多选题What are three of the functions that AutoQoS performs when it is configured on a switch？（）Asynchronizes FIFO， PQ， CQ， and MDRR， with WFQ， CBWFQ， and LLQBenables strict priority queuing for voice traffic， and weighted round robin queuing for data trafficCenables low latency queuing to ensure that voice traffic receives priority treatmentDenforces a trust boundary on switch access ports and uplinks/downlinksEmodifies queue sizes as well as queue weights where requiredFadjusts link speeds to adapt to QoS needs
考题
多选题You need to configure a new Cisco router to be installed in the VOIP network. Which threeinterface commands will configure the switch port to support a connected Cisco phone and to trustthe CoS values received on the port if CDP discovers that a Cisco phone is attached？（）Aswitchport voice vlan vlan-idBmls qos trust device cisco-phoneCswitchport priority extend cos_valueDmls qos trust cosEmls qos trust override cos
考题
多选题Refer to the exhibit. Which three statements are true about trust boundaries in the campus network？ （Choose three.）（）AA device is trusted if it correctly classifies packets.BA device is trusted if it correctly declassifies packets.CThe outermost trusted devices represent the trust boundary.DClassification and marking occur using 802.1ab QoS bits before reaching the trust boundary.ENetwork trust boundaries are automatically configured in IOS version 12.3 and later.FFor scalability， classification should be done as close to the edge as possible.
考题
单选题A standalone wireless AP solution is being installed into the campus infrastructure. The access points appear to boot correctly， however， wireless clients are not obtaining correct access. You verify that the local switch configuration connected to the access point appears as the following： interface ethernet 0/1 switchport access vlan 10 switchport mode access spanning-tree portfast mls qos trust dscp What is the most likely issue causing the problem？（）A
QoS trust should not be configured on a port attached to a standalone AP.B
QoS trust for switchport mode access should be defined as cos.C
switchport mode should be defined as trunk with respective QoS.D
switchport access vlan should be defined as 1.
考题
单选题As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）A
using DHCP snoopingB
snooping the incoming 802.1Q VLAN tagC
using CDPD
snooping the CoS marking on the incoming frames
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
多选题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？ （）Aswitchport voice vlan vlan-idBmls qos trust device cisco-phoneCswitchport priority extend cos_valueDmls qos trust cosEmls qos trust override cos
考题
单选题You have been tasked with setting a trust boundary on the Company network. What is the basic function of this trust boundary？（）A
Trust boundaries are points in the network where Layer 2 CoS markings are converted to Layer 3 DSCP or IP precedence markings.B
Trust boundaries are a point in the network where QoS functionality begins and ends.C
Trust boundaries determine whether certain types of traffic can pass.D
Trust boundaries are a point in the network where decisions about CoS markings on incoming packets are made.E
None of the other alternatives apply
考题
单选题When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network, how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port? （）A
by snooping the CoS marking on the incoming framesB
by using RTP hello messages between the switch port and the Cisco IP PhoneC
by using CDPD
by using DHCP snoopingE
by snooping the incoming 802.1Q VLAN tag
考题
单选题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.
考题
单选题Refer to the exhibit. Which Catalyst switch interface command would be used to cause the switch to instruct the phone to override the incoming CoS from the PC before forwarding the packet to the switch？（）A
switchport priority extend trustB
switchport priority extend cos 2C
switchport priority extend cos 11D
mls qos cos 2E
mls qos cos 2 override
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