Which two QoS classification and marking statements are true？（）

A . NBAR provides the ability to configure MCQ； it is a mandatory MCQ component. B . NBAR provides deep packet inspection and is used for advanced packet classification. C . NBAR provides per-protocol packet and byte accounting functionality； it is used to track bandwidth utilization for all protocols described in the loaded PDLMs. D . NBAR provides scheduling in an MQC policy map using an advanced algorithm.

A .  The SDM QoS wizard will create two real-time traffic classes to handle VoIP and voice signaling packets. B .  The SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， and video packets. C .  The SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets. D .  The SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packets. E .  The SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets. F .  The SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets.

A .  If the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inner IP header. B .  The ToS byte is copied to the outer header by default. Therefore， the qos pre-classify command is not necessary. C .  With GRE encapsulation， the qos pre-classify command is applied on the tunnel interface. This practice allows for different OoS configurations on each tunnel. D .  With GRE encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface. E .  With IPsec encapsulation， the qos pre-classify command is applied on the physical interface. This practice allows for different OoS configurations on each interface.

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）.

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 802.1Q standard uses a three bit field referred to as the user priority bits （PRI） to mark packets as belonging to a specific CoS.

A . the first step when using the SDM QoS wizard is to select the inbound interface on which the QoS policy must be applied B . the SDM QoS wizard can be used to optimize LAN， WAN， and VPN interfaces C . he SDM QoS wizard supports network-based application recognition （NBAR） to provide deep and stateful packet inspection D . he SDM QoS wizard will apply custom queuing and priority queuing policies to the identified interfaces E . he SDM QoS wizard will apply low latency-queuing，custom-queuing and priority-queuing policies to the identified interfaces F . to create and manage the QoS settings， the user must select the QoS wizard task under the Monitor optio

A . a drawback of implementing RSVP is the requirement to migrate to a supporting routing protocol B . RSVP uses DSCP to signal QoS requirements to routers  C . RSVP is a routing protocol D . RSVP is an IP protocol that uses IP protocol ID 46， and TCP/UDP ports 3455 E . RSVP specifically provides a level of service for rate-sensitive and delay-sensitive traffic F . the flow-based approach of RSVP is ideal for large， scalable implementations such as the public internet

A . the SDM QoS wizard will create two real-time traffic classes to handle VoIP， voice signaling， and video packets B . the SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， video， and video packets C . the SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets D . the SDM QoS wizard will create two business-critical traffic classes to handle transactional and  network management packets E . the SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets F . the SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packet

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.

A .  The QoS policy assigns a system class to the outgoing traffic for a vNIC or vHBA. B .  Flow-control policies determine whether the uplink Ethernet ports in a Cisco UCS environment send and receive IEEE 802.3x pause frames when the send buffer for a port fills. C .  If no system class is configured as CoS 0， the Fibre Channel system class is used. D .  The user can configure QoS for these system classes： platinum， gold， silver， best effort， Fibre Channel. E .  When configuring a system class， the type of adapter in a server may limit the maximum MTU supported.

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 andIPsec 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）

A .  On congested links， all forms of traffic will require some form of QoS. B .  All traffic types and requirements should be examined to determine the number of traffic classes required. C .  In the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient. D .  In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient. E .  In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient. F .  Payload compression provides more available bandwidth and reduces processing delay time.

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.

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.

A . Voice needs to be assigned to the hardware priority queue. B . Voice needs to be assigned to the software priority queue. C . Call signaling must have guaranteed bandwidth service. D . Strict-priority queuing should be limited to 50 percent of the capacity of the link. E . At least 33 percent of the link bandwidth should be reserved for default best-effort class.

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.

A .  Voice needs to be assigned to the hardware priority queue B .  Voice needs to be assigned to the software priority queue C .  Call signaling must have guaranteed bandwidth service D .  Strict-priority queuing should be limited to 50 percent of the capacity of the link E .  At least 33 percent or the link bandwidth should be reserved tor default best effort cla

A . The 802.11e standard is the IEEE 802.11 OoS WLAN standard. B . The Wi-Fi Multimedia （WMM） standard decreases the eight priority levels to four access categories. C . The Wi-Fi Multimedia （WMM） standard is a Wi-Fi Alliance standard that increases the four priority levels to eight access categories. D . The Wi-Fi Multimedia （WMM） standard is an IEEE standard that increases the four priority levels to eight access categories. E . Wireless 802.11 deploys Distributed Coordination Function （DCF）， carrier sense multiple access with collision detection （CSMA/CD）， interframe spacing， and random wait timers to avoid collisions. F . Wireless OoS designs and implementations commonly use Layer 3 differentiated services code point （DSCP） or Layer 2 802.1 p to ensure priority

A . end-to-end network delay times that exceed 50 ms for real-time traffic are considered unacceptable B . end-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptable C . end-to-end network delay is not a factor as long as the  delay is consistent D . some packet loss can be corrected by codec algorithms E . RSVP handles voice packet retransmission F . fragmentation is a result of packet lo

A .  reference to network ability to provide improved service to all network traffic B .  reduction in delay， jitter， and packet loss C .  equal handling of all packets D .  support for real-time applications E .  best-effort actio

A . Voice Traffic uses Assured Forwarding B . Voice Signaling traffic uses Assured Forwarding C . Voice Signaling traffic uses priority queuing D . Voice Traffic uses priority queuing E . Voice signaling traffic should use priority queuing with Assured Forwarding

A . delay sensitive packets are given preferential treatment B . the default policy identifies a delay sensitive class and default class C . the default policy identifies a delay sensitive class， best effort class， and default class D . the model is highly scalable E . the model is still predominant on the internet F the model provides guaranteed service

A . Cisco AutoQoS can be used repeatedly to apply a single QoS policy to multiple interfaces. B . Cisco AutoQoS includes an optional web-based GUI for automating the configuration of QoS services. C . Cisco AutoQoS provides capabilities to automate VoIP deployments. D . The auto qos global configuration command is used to configure Cisco AutoQoS. E . The Modular QoS CLI （MQC） is the best way to fine tune QoS configurations. F . The SDM QoS wizard is the fastest way to implement QoS.

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）.