单选题QOS，COS分别表示 ( )A服务质量保证体系，服务等级评价体系B服务质量，服务等级C服务协议控制，服务等级签约D以上都不是
单选题
QOS，COS分别表示 ( )
A
服务质量保证体系，服务等级评价体系
B
服务质量，服务等级
C
服务协议控制，服务等级签约
D
以上都不是
参考解析
解析：
相关考题：
Which two statements about voice VLANs are correct？（）A、Voice VLANs eliminate the need for QoS configurationB、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markingsC、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the networkD、Voice VLANs can be configured to forward existing CoS priorities or override themE、Voice VLANs are mainly used between access layer switches and distribution layer switchesF、Voice VLANs can be configured on Layer 2 ports only
End-to-end QoS is maintained in the Cisco WLAN deployment model by utilizing what parameter in lieu of 802.1p？（）A、 IP precedenceB、 type of service （ToS）C、 class of service （CoS）D、 differentiated services code point （DSCP）
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.
To provide quality of service （QoS） for voice traffic in an IEEE 802.1 q network， which class of service （CoS） value should be used in the 3-bit， user priority bits （PRI） field？ （）A、The PRI field should contain the Cos value of 010B、The PRI field should contain the Cos value of 011C、The PRI field should contain the Cos value of 100D、The PRI field should contain the Cos value of 101E、The PRI field should contain the Cos value of 110F、The PRI field should contain the CoS value of 111
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
Which statement is true about The QoS Class Fibre Channel？（）A、 Cannot be disabledB、 Cannot have the CoS changedC、 Can have "Packet Drop" enabledD、 Is multicast optimizedE、 Can have the MTU changed
What accurately describes the usage of a Cisco AutoQoS command？（）A、on Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phaseB、on Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policiesC、on Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuingD、on Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACLs
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
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.
单选题To provide quality of service （QoS） for voice traffic in an IEEE 802.1 q network， which class of service （CoS） value should be used in the 3-bit， user priority bits （PRI） field？ （）AThe PRI field should contain the Cos value of 010BThe PRI field should contain the Cos value of 011CThe PRI field should contain the Cos value of 100DThe PRI field should contain the Cos value of 101EThe PRI field should contain the Cos value of 110FThe PRI field should contain the CoS value of 111
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
单选题What accurately describes the usage of a Cisco AutoQoS command？（）Aon Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phaseBon Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policiesCon Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuingDon Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACLs
多选题Which two statements correctly describe a Cisco WLC configuration of Wireless QoS Profiles Wired_QoS_Profiles for an implementation of DSCP or CoS deployment?（）AIt must always be set on all QoS profile types because this sets the type of markings as either CoS or DSCP.BIt is optional if the Cisco WLC attached switch operates on a trust DSCP model.CIt must be set if the Cisco WLC attached switch operates on a trust CoS model.DIt sets the EDCF queue used for the radio-transmitted frames.
单选题Which statement is correct for both the LWAPP and CAPWAP AP upstream 802.1Q tagged wired QoS priority for a non-WMM-associated client frame that is H-REAP locally switched running v5.2?（）AWireless client WMM UP classification is translated to a wired DSCP priority.BWireless client 802.11p classification is translated to a wired DSCP priority.CWireless client WMM UP classification is translated to a wired 802.1p CoS priority.DWireless client 802.11p classification is translated to a wired 802.1p CoS priority.EWLAN configured QoS level is used to set the wired DSCP priority.FWired 802.1p CoS priority is not set.
单选题Which statement is true about The QoS Class Fibre Channel？（）A Cannot be disabledB Cannot have the CoS changedC Can have Packet Drop enabledD Is multicast optimizedE Can have the MTU changed