多选题Which two statements or sets of statements are true about the application of the qos pre-classify command？（）AIf the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inne

题目
多选题
Which two statements or sets of statements are true about the application of the qos pre-classify command？（）
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.

相似考题

1.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

2.What does qos pre-classify provides inregardto implementing QoS over GRE/IPSec VPN tunnels？（）A、 enables IOS to copy the ToS field from the inner （original） IPheader to theouter tunnel IP headerB、 enables IOS to make a copy of the inner （original） IP header and to run a QoS classification before encryption， based on fields in the inner IP header.C、 enables IOS to classify packets based on the ToS field in the inner （original） IP headerD、 enables IOS to classify packets based on the ToS field in the outer tunnel IP headerE、 enables the IOS classification engine to only see a single encrypted and tunneledflow to reduce classification complexity

3.Which three statements are true about the application of QoS models？ （）A、 The DiffServ model requires applications to signal the network with QoS requirements.B、 The DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses.C、 The DiffServ model requires RSVP.D、 The best effort model is suitable for applications such as file transfer and e-mailE、 The IntServ model requires applications to signal the network with QoS requirements.F、 The IntServ model attempts to deliver a level of service based on the QoS specified by each packet

4.Choose the true statement regarding QoS pre-classify.（）A、QoS pre-classify permits making QoS decisions based on elements from the unencrypted IP packet.B、QoS pre-classify is required when encrypting voice.C、QoS pre-classify is an advantage to Service Providers transporting encrypted packets.D、QoS pre-classify is not designed for IPSec/GRE configurations.

参考答案和解析
正确答案： C,D
解析： 暂无解析
更多“多选题Which two statements or sets of statements are true about the application of the qos pre-classify command？（）AIf the classification policy is based upon the ToS byte， the qos pre-classify command is required because the ToS byte only appears in the inne”相关问题

  • 第1题：

    A GRE tunnel is configured between a local and a remote site. Where should the service policy be applied to classify packets based on the pretunnel header? （）

    • A、in global configuration mode， apply the service policy and use the qos pre-classify
    • B、in global configuration mode， apply the service policy but do not use the qos pre-classify command
    • C、apply the service policy on the physical interface but do not use the qos pre-classify
    • D、apply the service policy on the tunnel interface but do not use the qos pre-classify command 
    • E、apply the service policy on the tunnel interface and use the qos pre-classify command

    正确答案:C

  • 第2题：

    The Cisco AutoQoS feature is being used throughout the Company VOIP network.  Which three  statements about this feature are true？（）

    • A、The "mls qos" global configuration command must be entered before configuring AutoQoS.
    • B、CEF must be enabled.
    • C、The "no auto qos voip" command is used to disable Cisco AutoQos and revoke all  configurations generated by Cisco AutoQos.
    • D、CDP must be enabled.
    • E、SNMP must be enabled.

    正确答案:B,C,D

  • 第3题：

    Which two statements are true about the various methods of implementing QoS？（）

    • 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.

    正确答案:C,E

  • 第4题：

    What is true about Quality of Service （QoS） for VPNs？（）

    • A、QoS preclassification is only supported on generic routing encapsulation （GRE） and IPsec VPNs
    • B、QoS preclassification is not required in Layer 2 Tunneling Protocol （L2TP）， Layer2 Forwarding （L2F）， and Point-to-Point Tunneling Protocol （PPTP） VPNs
    • C、QoS preclassification is supported on IPsec AH VPNs， but not on IPsec ESP VPNs
    • D、the QoS-for-VPNs feature （QoS preclassification） is designed for VPN transport interfaces
    • E、with IPsec tunnel mode， the type of service （ToS） byte value is copied automatically from the original IP header to the tunnel header

    正确答案:C

  • 第5题：

    Which three statements are true about the appliance of QoS models？（）

    • A、the DiffServ model requires applications to signal the network with QoS requirements
    • B、the DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses
    • C、the DiffServ model requires RSVP
    • D、the best effort model is suitable for applications such as file transfer and e-mail
    • E、the IntServ model requires applications to signal the network with QoS requirements
    • F、the IntServ model model attempts to deliver a level of service based on the QoS specified by each packet

    正确答案:B,D,E

  • 第6题：

    多选题
    Which two Cisco AutoQoS configuration statements are true？ （）
    A

    the auto discovery qos command is supported on serial interfaces， subinterfaces， and virtual interfaces

    B

    CEF must be enabled before configuring the auto discovery qos command

    C

    the auto discovery qos privilege EXEC command must be configured on a router for several days to collect a sampling of data traffic

    D

    the auto qos trust command relies on NBAR to provide VoIP classification

    E

    the auto qos voip command configures the voip classification on routers and switches


    正确答案： E,C
    解析： 暂无解析

  • 第7题：

    多选题
    Which two types of QoS functionality will be provided by Network-Based Application Recognition？（）
    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.


    正确答案： B,A
    解析： 暂无解析

  • 第8题：

    多选题
    The Cisco AutoQoS feature is being used throughout the Company VOIP network.  Which three  statements about this feature are true？（）
    A

    The mls qos global configuration command must be entered before configuring AutoQoS.

    B

    CEF must be enabled.

    C

    The no auto qos voip command is used to disable Cisco AutoQos and revoke all  configurations generated by Cisco AutoQos.

    D

    CDP must be enabled.

    E

    SNMP must be enabled.


    正确答案： D,B
    解析： 暂无解析

  • 第9题：

    多选题
    Which two statements or sets of statements are true about the application of the qos pre-classify command？（）
    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.


    正确答案： C,B
    解析： 暂无解析

  • 第10题：

    多选题
    Which two statements are true regarding the starting of the database instance using the following command?（） SQL>STARTUP UPGRADE
    A

    It enables all system triggers.

    B

    It allows only SYSDBA connections.

    C

    It ensures that all job queues remain active during the upgrade process.

    D

    It sets system initialization parameters to specific values that are required to enable database upgrade scripts to be run.


    正确答案： C,B
    解析： 暂无解析

  • 第11题：

    单选题
    Choose the true statement regarding QoS pre-classify.（）
    A

    QoS pre-classify permits making QoS decisions based on elements from the unencrypted IP packet.

    B

    QoS pre-classify is required when encrypting voice.

    C

    QoS pre-classify is an advantage to Service Providers transporting encrypted packets.

    D

    QoS pre-classify is not designed for IPSec/GRE configurations.


    正确答案： A
    解析： 暂无解析

  • 第12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？（）
    A

    IP precedence bits

    B

    DSCP bits

    C

    original port numbers

    D

    DE bits

    E

    source IP address

    F

    destination IP address


    正确答案： C,E
    解析： 暂无解析

  • 第13题：

    Which two statements or sets of statements are true about the application of the qos pre-classify command？（）

    • 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.

    正确答案:B,C

  • 第14题：

    Which QoS preclassification option will require the use of the qos pre-classify command for the VPN traffic？ （）

    • A、VPN traffic needs to be classified based on the Layer2 header information
    • B、VPN traffic needs to be classified based on the IP precedence or DSCP
    • C、VPN traffic needs to be classified based on IP flow or Layer 3 information， such as source and destination IP address
    • D、VPN traffic with Authentication Header （AH） needs to preserve the ToS byte

    正确答案:C

  • 第15题：

    Which of the following is TRUE about the ping  -f command?（）

    • A、 It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the "f" in the command line. 
    • B、 It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent in fast mode. 
    • C、 It is useful for flooding from slow character based terminals since it only displays a dot "."       for each packet sent and a backspace on returned in fast mode. 
    • D、 The command can only be run by root.

    正确答案:D

  • 第16题：

    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.

    正确答案:B,D

  • 第17题：

    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 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 option

    正确答案:B,C

  • 第18题：

    单选题
    What does qos pre-classify provides inregardto implementing QoS over GRE/IPSec VPN tunnels？（）
    A

     enables IOS to copy the ToS field from the inner （original） IPheader to theouter tunnel IP header

    B

     enables IOS to make a copy of the inner （original） IP header and to run a QoS classification before encryption， based on fields in the inner IP header.

    C

     enables IOS to classify packets based on the ToS field in the inner （original） IP header

    D

     enables IOS to classify packets based on the ToS field in the outer tunnel IP header

    E

     enables the IOS classification engine to only see a single encrypted and tunneledflow to reduce classification complexity


    正确答案： B
    解析： 暂无解析

  • 第19题：

    多选题
    Which three statements are true about the application of QoS models？ （）
    A

    The DiffServ model requires applications to signal the network with QoS requirements.

    B

    The DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses.

    C

    The DiffServ model requires RSVP.

    D

    The best effort model is suitable for applications such as file transfer and e-mail

    E

    The IntServ model requires applications to signal the network with QoS requirements.

    F

    The IntServ model attempts to deliver a level of service based on the QoS specified by each packet


    正确答案： A,C
    解析： 暂无解析

  • 第20题：

    多选题
    Which three statements are true about the appliance of QoS models？（）
    A

    the DiffServ model requires applications to signal the network with QoS requirements

    B

    the DiffServ model can be used to deliver QoS based upon IP precedence， or source and destination addresses

    C

    the DiffServ model requires RSVP

    D

    the best effort model is suitable for applications such as file transfer and e-mail

    E

    the IntServ model requires applications to signal the network with QoS requirements

    F

    the IntServ model model attempts to deliver a level of service based on the QoS specified by each packet


    正确答案： F,C
    解析： 暂无解析

  • 第21题：

    多选题
    Which two statements are true about the various methods of implementing QoS？（）
    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.


    正确答案： E,D
    解析： 暂无解析

  • 第22题：

    单选题
    What is true about Quality of Service （QoS） for VPNs？（）
    A

    QoS preclassification is only supported on generic routing encapsulation （GRE） and IPsec VPNs

    B

    QoS preclassification is not required in Layer 2 Tunneling Protocol （L2TP）， Layer2 Forwarding （L2F）， and Point-to-Point Tunneling Protocol （PPTP） VPNs

    C

    QoS preclassification is supported on IPsec AH VPNs， but not on IPsec ESP VPNs

    D

    the QoS-for-VPNs feature （QoS preclassification） is designed for VPN transport interfaces

    E

    with IPsec tunnel mode， the type of service （ToS） byte value is copied automatically from the original IP header to the tunnel header


    正确答案： D
    解析： 暂无解析

  • 第23题：

    多选题
    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 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 option


    正确答案： F,E
    解析： 暂无解析

  • 第24题：

    多选题
    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.


    正确答案： C,D
    解析： 暂无解析

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