Which two QoS classification and marking statements are true？（）A、 In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.B、 In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP fieldC、 In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.D、 The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.E、 The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
Which two QoS classification and marking statements are true？（）
- A、 In a Frame Relay network， delay sensitive traffic is tagged with the discard eligible （DE） bit.
- B、 In an MPLS network， the three most significant bits of the DSCP or the IP precedence of the IP packet are copied into the MPLS EXP field
- C、 In an MPLS network， the MPLS EXP bits are used to identify up to 16 CoS values.
- D、 The differentiated services code point （DSCP） field consists of the first three bits of the IP precedence field in the header of an IP packet.
- E、 The 802.10 standard uses a three bitfield referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.
相关考题：
Which two configurations are made using the QoS Setup Wizard? ()(Choose two.) A. Assign applications to traffic classes.B. Use ToS/DSCP values for traffic classes.C. Exclude subnets from QoS management.D. Select dedicated vs. over-subscribed circuits.
Which two queuing methods are supported by outbound QoS?() (Choose two.) A. weighted fair priorityB. weighted fair queuingC. weighted strict priorityD. weighted strict queuing
Which two conditions will cause switch－to－wire to occur? ()(Choose two.) A. loss of powerB. QoS congestionC. software failure occuredD. WX device exceeded its license speedE. traffic does not match application definiton
Which two settings must be configured in order to use the GUI to configure Call Admission Control with voice applications?() A. QoS must be set to PlatinumB. WMM must be enabledC. QoS must be set to GoldD. TSPEC must be disabledE. Cisco Compatible Extensions must be disabled
Which two Cisco AutoQoS configuration statements are true？ （）A、the auto discovery qos command is supported on serial interfaces， subinterfaces， and virtual interfacesB、CEF must be enabled before configuring the auto discovery qos commandC、the auto discovery qos privilege EXEC command must be configured on a router for several days to collect a sampling of data trafficD、the auto qos trust command relies on NBAR to provide VoIP classificationE、the auto qos voip command configures the voip classification on routers and switches
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.
Cisco Catalyst 4500 Series switches are attractive to medium-size campuses with growth opportunities due to the switches enhanced security and which two other features？ （）A、 enhanced multilayer software imageB、 connectivity to multiple types of WAN connectionsC、 Cisco Unified Communications ManagerD、 QoS for converged networksE、 modular， customizable components
SDM creates a low latency queuing （LLQ） service policy with its associated classes. What are the two types of low latency queuing available using the SDM QoS wizard？（）A、 FIFO queuing， which provides a means to hold packets while they are waiting to exit an interfaceB、 Priority queuing， which ensures a fixed amount of bandwidthC、 Custom queuing （CQ）， which provides a queuing tool that services all queues， even during times of congestionD、 Bandwidth queuing， which ensures a minimum amount of bandwidthE、 Weighted fair queuing （WFQ）， which classifies packets based on flows
Which two settings must be configured in order to use the GUI to configure Call Admission Controlwith voice applications？ （）A、 QoS must be set to PlatinumB、 WMM must be enabledC、 QoS must be set to GoldD、 TSPEC must be disabledE、 Cisco Compatible Extensions must be disabled
What are two steps needed to define a QoS policy for a traffic class？（）A、 Determine a minimum bandwidth guarantee.B、 Determine interfaces to which to apply policy.C、 Assign priorities to the class.D、 Configure access control lists.
Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？（）A、the SDM QoS wizard will create two real-time traffic classes to handle VoIP， voice signaling， and video packetsB、the SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， video， and video packetsC、the SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packetsD、the SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packetsE、the SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packetsF、the SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets
Which two statements about the DiffServ QoS model are true？（）A、DiffServ requires RSVP to set up a path through the network to accommodate the requested QoS.B、Network traffic is identified by class， and the level of service is chosen for each class.C、The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment.D、RSVP enables the DiffServ model to provide end-to-end QoS.E、The DiffServ model is more scalable than the IntServ model.F、The flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.
QoS refers to the ability of a network to provide improved service， over various underlying technologies， to select network traffic. Which two traits are inherent to QoS？（）A、 reference to network ability to provide improved service to all network trafficB、 reduction in delay， jitter， and packet lossC、 equal handling of all packetsD、 support for real-time applicationsE、 best-effort actions
For which two network problems would QoS be a good solution？（）A、serialization delayB、end-to-end delayC、lack of bandwidthD、inconsistent port costsE、routing table convergence issuesF、poor file transfer rates
You need to determine where the trust boundaries will be in a new Company VOIP design. Which two statements are true about these trust boundaries？（）A、Trust boundaries are configured in the core of the network to provide the most efficient forwarding based upon QoS markings，B、Setting trust boundaries at the edge of the network allows intermediate hop devices to administer QoS policies without detailed packet identification.C、Trust boundaries are used to determine which QoS mechanism will be applied to the traffic. D、At the trust boundaries， the untrusted traffic will be marked with a new QoS value appropriate for the policy in place at the point where the traffic entered the campus network. E、Trust boundaries define the firewall rules for QoS admission into a network.
Which two statements about the QoS functionality of the Cisco SDM are true？（）A、the first step when using the SDM QoS wizard is to select the inbound interface on which the QoS policy must be appliedB、the SDM QoS wizard can be used to optimize LAN， WAN， and VPN interfacesC、he SDM QoS wizard supports network-based application recognition （NBAR） to provide deep and stateful packet inspectionD、he SDM QoS wizard will apply custom queuing and priority queuing policies to the identified interfacesE、he SDM QoS wizard will apply low latency-queuing，custom-queuing and priority-queuing policies to the identified interfacesF、to create and manage the QoS settings， the user must select the QoS wizard task under the Monitor option
Which two statements are true about the implementation of QoS？ （）A、 Implementing DiffServ involves the configuration of RSVP.B、 Implementing IntServ allows QoS to be performed by configuring only the ingress and egress devices.C、 Implementing IntServ involves the utilization of RSVP.D、 Traffic should be classified and marked by the core network devices.E、 Traffic should be classified and marked as close to the edge of the network as possible.
Which two metrics does the Executive report summarize? （）(Choose two.)A、QoS statisticsB、WAN performanceC、acceleration statisticsD、compression statistics
Which two conditions will cause switch-to-wire to occur? （）(Choose two.)A、loss of powerB、QoS congestionC、software failure occuredD、WX device exceeded its license speedE、traffic does not match application definiton
多选题Which two Cisco AutoQoS configuration statements are true？ （）Athe auto discovery qos command is supported on serial interfaces， subinterfaces， and virtual interfacesBCEF must be enabled before configuring the auto discovery qos commandCthe auto discovery qos privilege EXEC command must be configured on a router for several days to collect a sampling of data trafficDthe auto qos trust command relies on NBAR to provide VoIP classificationEthe auto qos voip command configures the voip classification on routers and switches
多选题Which two configurations are made using the QoS Setup Wizard?（） (Choose two.)AAssign applications to traffic classes.BUse ToS/DSCP values for traffic classes.CExclude subnets from QoS management.DSelect dedicated vs. over-subscribed circuits
多选题Which two statements are true about the various methods of implementing QoS？（）ACisco AutoQoS can be used repeatedly to apply a single QoS policy to multiple interfaces.BCisco AutoQoS includes an optional web-based GUI for automating the configuration of QoS services.CCisco AutoQoS provides capabilities to automate VoIP deployments.DThe auto qos global configuration command is used to configure Cisco AutoQoS.EThe Modular QoS CLI （MQC） is the best way to fine tune QoS configurations.FThe SDM QoS wizard is the fastest way to implement QoS.
多选题Which two statements about the DiffServ QoS model are true？（）ADiffServ requires RSVP to set up a path through the network to accommodate the requested QoS.BNetwork traffic is identified by class， and the level of service is chosen for each class.CThe DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment.DRSVP enables the DiffServ model to provide end-to-end QoS.EThe DiffServ model is more scalable than the IntServ model.FThe flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.
多选题For which two network problems would QoS be a good solution？（）Aserialization delayBend-to-end delayClack of bandwidthDinconsistent port costsErouting table convergence issuesFpoor file transfer rates
多选题The Cisco SDM will create a QoS policy that provides services to two types of traffic. Which two statements indicate the default QoS parameters that are created by SDM？（）ABusiness-critical traffic will be sorted into two QoS classes.BReal-time traffic will be sorted into one QoS class.CVoice traffic will be considered real-time traffic while call signaling will be considered business-critical.DAll traffic except real-time will be considered best-effort.ERouting， management， and transactional traffic will be considered business-critical.FVoice and call signaling traffic will be considered real-time.
多选题Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？ （）AThe SDM QoS wizard will create two real-time traffic classes to handle VoIP and voice signaling packets.BThe SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， and video packets.CThe SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets.DThe SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packets.EThe SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets.FThe SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets.
多选题Which two queuing methods are supported by outbound QoS?（） (Choose two.)Aweighted fair priorityBweighted fair queuingCweighted strict priorityDweighted strict queuing
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.