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多选题
Which three traffic descriptors are typically used as QoS markings for packets or frames entering the network？（）
A
protocol type
B
CoS
C
DSCP
D
IP precedence
E
destination address
F
input interface
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When Cisco SDM is used to generate QoS policy， various QoS classes will be created and assigned a percentage of the interface bandwidth. Which three statements indicate the default bandwidth values that are assigned by SDM for outgoing traffic on a WAN interface？ （）A、 Voice traffic will be assigned 47% of the interface bandwidth.B、 Voice call signaling will be assigned 33% of the interface bandwidth.C、 Telnet， SSH， and other traffic that is generated to manage the router is assigned 5% of the interface bandwidth.D、 Best-effort traffic will be assigned 38% of the interface bandwidth.E、 Routing protocol traffic will be assigned 5% of the interface bandwidth.F、 Transactional traffic will be assigned 5% of the interface bandwidth.
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Which two QoS statements are true about the use of the SDM QoS wizard？（）A、Business-critical traffic includes VoIP and voice signaling packets.B、SDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec tunnels.C、SDM can provide QoS for real-time traffic and business-critical traffic.D、SDM creates a custom-queuing （CQ） or a priority-queuing （PQ） policy.E、SDM creates a low latency queuing （LLQ） service policy with its associated classes.F、When allocating bandwidth， values can be entered in either bandwidth percentage or kilobytes per second （kBps）.
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Which three QoS mechanisms can be configured to improve VoIP quality on a converged network？（）A、The use of a queuing method that will give VoIP traffic strict priority over other traffic B、The use of RTP header compression for the VoIP traffic.C、The proper classification and marking of the traffic as close to the source as possibleD、The use of 802.1QinQ trunking for VoIP trafficE、The use of WRED for the VoIP traffic
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What are three traffic descriptors that are used by the classification process to categorize packets that require special OoS handling？（）A、Resource Reservation Protocol （RSVP）B、IP precedenceC、traffic shapingD、trust boundariesE、DSCPF、application
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You work as a network technician. Your boss is interested in the QoS technology in the context ofvideo traffic. What can be said of application of this technology in this type of network？（）A、The access layer is the initial point at which traffic enters the network. Traffic is marked （orremarked） at Layers 2 and 3 by the access switch as it enters the network， or is "trusted" that it isentering the network with the appropriate tagB、No traffic marking occurs at the core layer. Layer 2/3 QoS tags are trusted from distributionlayer switches and used to prioritize and queue the traffic as it traverses the coreC、Traffic inbound from the access layer to the distribution layer can be trusted or reset dependingupon the ability of the access layer switches. Priority access into the core is provided based onLayer 3 QoS tagsD、IP precedence， DSCP， QoS group， IP address， and ingress interface are Layer 2 characteristics that are set by the access layer as it passes traffic to the distribution layer. Thedistribution layer， once it has made a switching decision to the core layer， strips these offE、MAC address， Multiprotocol Label Switching （MPLS）； the ATM cell loss priority （CLP） bit， theFrame Relay discard eligible （DE） bit， and ingress interface are established by the voicesubmodule （distribution layer） as traffic passes to the core layerF、The distribution layer inspects a frame to see if it has exceeded a predefined rate of trafficwithin a certain time frame， which is typically a fixed number internal to the switch. If a frame isdetermined to be in excess of the predefined rate limit， the CoS value can be marked up in a waythat results in the packet being dropped
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Which statement is true about the SDM QoS wizard and its ability to enable a QoS policy on router interfaces？（）A、QoS can be enabled on interfaces used for Easy VPN clientsB、QoS can be enabled on IPsec VPN interfaces and tunnelsC、QoS can be enabled on interfaces with an existing QoS policyD、the QoS policy can be enabled for incoming and outgoing traffic on the interface
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Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs feature （QoS pre-classify） provides packet classification and applies appropriate QoS service on tunnel interfaces？（）A、IP precedence bitsB、DSCP bitsC、original port numbersD、DE bitsE、source IP addressF、destination IP address
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Which three practices are important to the implementation of a DiffServ QoS architecture？（）A、 Because services are allocated throughout the network before the transmission of data begins， traffic classes can be guaranteed QoS services.B、 Traffic classes are marked with Layer 2 markings to allow for more granularity in identifying traffic classes.C、 Traffic classes are marked with Layer 3 markings to allow them to traverse different network types without loss of QoS information.D、 Traffic classes allow networks to provide proper QoS treatment of packets without applications having to request services.E、 Based upon the network capabilities， QoS markings are placed on packets as needed throughout the network to allow for proper QoS treatment of packets.F、 QoS markings are placed on packets as close to the network edge as possible to allow distribution and core devices to determine QoS actions as quickly as possible.
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Which IOS QoS mechanism is used strictly to rate limit traffic destinedto the router itself？（）A、 Class-Based PolicingB、 Control Plane PolicingC、 Dual-Rate PolicierD、 Single-Rate PolicierE、 Class-BasedTraffic Shaper
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Which three traffic descriptors are typically used as QoS markings for packets or frames entering the network？（）A、protocol typeB、CoSC、DSCPD、IP precedenceE、destination addressF、input interface
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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
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Which three mechanisms are used to secure management traffic from outside IPS sensors?（）A、secure tunnelsB、a separate management VLANC、secure VLANs to isolate sensorsD、an out-of-band path around the firewallE、asymmetric traffic flows to isolate sensorsF、private VLANs to put all sensors on isolated ports
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How can Cisco NetFlow be used to aid in the operation and troubleshooting of QoS issues? （）A、NetFlow can report on the number of traffic matches for each class map in a configured QoS policy configuration.B、NetFlow records can be used to understand traffic profiles per class of service for data, voice, and video traffic.C、NetFlow can discover the protocols in use and automatically adjust QoS traffic classes to meet policy-map requirements.D、NetFlow can be configured to identify voice and video traffic flows and place them into a low-latency queue for expedited processing.
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What are three traffic descriptors typically used to categorize traffic into different classes？（）A、IP precedenceB、media typeC、DSCPD、outgoing interfaceE、incoming interfaceF、DLCI
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多选题Which three traffic descriptors are typically used as QoS markings for packets or frames entering the network？（）Aprotocol typeBCoSCDSCPDIP precedenceEdestination addressFinput interface
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多选题When Cisco SDM is used to generate QoS policy， various QoS classes will be created and assigned a percentage of the interface bandwidth. Which three statements indicate the default bandwidth values that are assigned by SDM for outgoing traffic on a WAN interface？ （）AVoice traffic will be assigned 47% of the interface bandwidth.BVoice call signaling will be assigned 33% of the interface bandwidth.CTelnet， SSH， and other traffic that is generated to manage the router is assigned 5% of the interface bandwidth.DBest-effort traffic will be assigned 38% of the interface bandwidth.ERouting protocol traffic will be assigned 5% of the interface bandwidth.FTransactional traffic will be assigned 5% of the interface bandwidth.
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多选题What are three traffic descriptors typically used to categorize traffic into different classes？（）AIP precedenceBmedia typeCDSCPDoutgoing interfaceEincoming interfaceFDLCI
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多选题What are three traffic descriptors that are used by the classification process to categorize packets that require special OoS handling？（）AResource Reservation Protocol （RSVP）BIP precedenceCtraffic shapingDtrust boundariesEDSCPFapplication
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多选题Which two options can be used as traffic descriptors when classifying and marking traffic？ （）Aincoming interfaceBLayer 2 differentiated services code point （DSCP）CLayer 3 IP precedenceDoutgoing interface
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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.
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多选题Which two QoS statements are true about the use of the SDM QoS wizard？ （）ABusiness-critical traffic includes VoIP and voice signaling packets.BSDM can be used to configure a basic QoS policy for incoming traffic on WAN interfaces and IPsec tunnels.CSDM can provide QoS for real-time traffic and business-critical traffic.DSDM creates a custom-queuing （CQ） or a priority-queuing （PQ） policy.ESDM creates a low latency queuing （LLQ） service policy with its associated classes.FWhen allocating bandwidth， values can be entered in either bandwidth percentage or kilobytes per second （kBps）.
考题
多选题Which three of the following network features are methods used to achieve high availability？（）ASpanning Tree Protocol （STP）BDelay reductionCHot Standby Routing Protocol （HSRP）DDynamic routing protocolsEQuality of Service （QoS）FJitter management
考题
单选题As an experienced network administrator, you are asked to troubleshoot a QoS problem. In which way might the Cisco NetFlow be helpful during the troubleshooting process?（）A
NetFlow can discover the protocols in use and automatically adjust QoS traffic classes to meet policy-map requirements.B
NetFlow records can be used to understand traffic profiles per class of service for data, voice, and video traffic.C
NetFlow can be configured to identify voice and video traffic flows and place them into a low-latency queue for expedited processing.D
NetFlow can report on the number of traffic matches for each class map in a configured QoS policy configuration.
考题
多选题In the design of a QoS solution， which two factors should be taken into consideration？（）AOn congested links， all forms of traffic will require some form of QoS.BAll traffic types and requirements should be examined to determine the number of traffic classes required.CIn the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient.DIn the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient.EIn the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient.FPayload compression provides more available bandwidth and reduces processing delay time.
考题
多选题Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs feature （QoS pre-classify） provides packet classification and applies appropriate QoS service on tunnel interfaces？（）AIP precedence bitsBDSCP bitsCoriginal port numbersDDE bitsEsource IP addressFdestination IP address
考题
多选题Which three QoS mechanisms can be configured to improve VoIP quality on a converged network？（）AThe use of a queuing method that will give VoIP traffic strict priority over other trafficBThe use of RTP header compression for the VoIP traffic.CThe proper classification and marking of the traffic as close to the source as possibleDThe use of 802.1QinQ trunking for VoIP trafficEThe use of WRED for the VoIP traffic
考题
单选题Which statement is true about the SDM QoS wizard and its ability to enable a QoS policy on router interfaces？（）A
QoS can be enabled on interfaces used for Easy VPN clientsB
QoS can be enabled on IPsec VPN interfaces and tunnelsC
QoS can be enabled on interfaces with an existing QoS policyD
the QoS policy can be enabled for incoming and outgoing traffic on the interface
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