单选题What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）A CS3B CS1C EFD 5E 6

题目
单选题
What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）
A

CS3

B

CS1

C

EF

D

5

E

6

相似考题

1.After enabling port security on a Cisco Catalyst switch， what is the default action when the configuredmaximum of allowed MAC addresses value is exceeded？（）A、The port’s violation mode is set to restrictB、The port is shut downC、The MAC address table is cleared and the new MAC address is entered into the tableD、The port remains enabled， but bandwidth is throttled until old MAC addresses are aged out

2. The Company network administrator has entered the "auto qos voip cisco-phone" command on  switch R1.  What does this command do？（）A、It disables the trust boundary feature because the switch knows a Cisco IP phone is attached.B、The switch assigns a CoS value of 5 to incoming packets.C、If a Cisco IP phone is attached and removed， the switch continues to trust the CoS values as  long as the switch is not rebooted.D、It turns on STP to see if a Cisco IP phone is attached.E、If a Cisco IP phone is attached， the switch trusts the CoS.F、None of the other alternatives apply.

3.What are two things that an access point （AP） does when it receives an 802.11 frame from a Wi-Fi Multimedia （WMM） client？ （）A、EAP-FASTEAP-FAS Access Point Protocol （LWAPP） packet is used to generate an 802.1 p priority value in the packets， which are sent to an Ethernet switch by the controllers.B、The AP will police the 802.1 le priority value to ensure it does not exceed the maximum value allowed for the QoS policy that is assigned to that client.C、Once the LWAPP packet is received， the AP generates the IEEE 802.1 p priority value.D、The AP will map the 802.11e priority value to the DSCP value.E、The AP will map the DSCP value to the outer LWAPP frame.

4.Which companion switch is recommended to be installed with Cisco Smart Business Communications System？（）A、 C2950B、 C3750C、 ESW 500D、 SRW224G4

更多“What is the recommended Cisco DSCP value for a switch or rou”相关问题

  • 第1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?（）

    • 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.

    正确答案:B,C

  • 第2题：

    What is the Cisco recommended EDCF queue to use for voice TSPEC?（）

    • A、AC_VI
    • B、AC_VO
    • C、AC_BK
    • D、AC_BE

    正确答案:B

  • 第3题：

    You are bringing up a new Cisco Catalyst switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?（）

    • A、Switch(config)# switchport trunk encapsulation isl
    • B、Switch(config)# switchport trunk encapsulation ietf
    • C、Switch(config-if)# switchport trunk encapsulation isl
    • D、Switch(config-if)# switchport trunk encapsulation ietf
    • E、Switch(config-if)# switchport trunk encapsulation dot1q

    正确答案:E

  • 第4题：

    When configuring SSH， which is the Cisco minimum recommended modulus value？（）

    • A、2048 bits
    • B、1024 bits
    • C、256 bits
    • D、512 bits

    正确答案:B

  • 第5题：

    An LWAPP encapsulated packet is being sent from the Cisco WLC v5.2 to the AP for a wireless WMM client. Can the LWAPP frame be altered to change the resulting final WMM queue for transmission on an 802.11 client?（）

    • A、Yes，by modifying the LWAPP frame header DSCP value in transit.
    • B、Yes，by modifying the LWAPP frame header 802.1p value in transit.
    • C、No，the WMM queue classification parameter is transported inside the LWAPP tunnel.
    • D、No，the WMM queue classification parameter is determined at the AP based on the original client IP  header DSCP value.

    正确答案:A

  • 第6题：

    What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）

    • A、 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
    • B、 79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.
    • C、 79xx IP phones do not mark voice packets with optimal DSCP values.
    • D、 79xx IP phones use a custom protocol to communicate CDP information to the switch.

    正确答案:C

  • 第7题：

    单选题
    When configuring SSH， which is the Cisco minimum recommended modulus value？（）
    A

    2048 bits

    B

    1024 bits

    C

    256 bits

    D

    512 bits


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down.  What might explain what happened？ （）
    A

    The new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.

    B

    The configuration revision of the new switch was higher than the configuration revision of the production VTP domain.

    C

    The link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.

    D

    The ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）
    A

     79xx IP phones do not automatically mark voice packets with non-zero DSCP values.

    B

     79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.

    C

     79xx IP phones do not mark voice packets with optimal DSCP values.

    D

     79xx IP phones use a custom protocol to communicate CDP information to the switch.


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch. What must be done to ensure that this new switch becomes the root bridge on the network？（）
    A

     Lower the bridge priority number.

    B

     Change the MAC address of the switch.

    C

     Increase the VTP revision number for the domain.

    D

     Lower the root path cost on the switch ports.

    E

     Assign the switch an IP address with the lowest value.


    正确答案： E
    解析： 暂无解析

  • 第11题：

    单选题
    An LWAPP encapsulated packet is being sent from the Cisco WLC v5.2 to the AP for a wireless WMM client. Can the LWAPP frame be altered to change the resulting final WMM queue for transmission on an 802.11 client?（）
    A

    Yes，by modifying the LWAPP frame header DSCP value in transit.

    B

    Yes，by modifying the LWAPP frame header 802.1p value in transit.

    C

    No，the WMM queue classification parameter is transported inside the LWAPP tunnel.

    D

    No，the WMM queue classification parameter is determined at the AP based on the original client IP  header DSCP value.


    正确答案： B
    解析： 暂无解析

  • 第12题：

    多选题
    What are two characteristics of a managed Cisco Small Business Switch when recommending it over an unmanaged switch？ （）
    A

    end-user installed and supported

    B

    VLAN support

    C

    low initial cost

    D

    desktop installation

    E

    web-controlled GUI


    正确答案： B,E
    解析： 暂无解析

  • 第13题：

    What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）

    • A、CS3
    • B、CS1
    • C、EF
    • D、5
    • E、6

    正确答案:C

  • 第14题：

    A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down.  What might explain what happened？ （）

    • A、The new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.
    • B、The configuration revision of the new switch was higher than the configuration revision of the production VTP domain.
    • C、The link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.
    • D、The ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.

    正确答案:B

  • 第15题：

    With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）

    • A、AF Class
    • B、Drop Probability
    • C、CS（Class Selector Value ）
    • D、PHB （Per-Hop Behavior ）
    • E、IP Precedence
    • F、Queue Depth

    正确答案:B

  • 第16题：

    What is the typical marked DSCP value for a voice media packet in Voice over IP technology？（）

    • A、AF41
    • B、AF31
    • C、AF21
    • D、BE
    • E、EF

    正确答案:E

  • 第17题：

    The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch. What must be done to ensure that this new switch becomes the root bridge on the network?（）

    • A、Lower the bridge priority number.
    • B、Change the MAC address of the switch.
    • C、Increase the VTP revision number for the domain.
    • D、Lower the root path cost on the switch ports.
    • E、Assign the switch an IP address with the lowest value.

    正确答案:A

  • 第18题：

    单选题
    What is the typical marked DSCP value for a voice signaling packet in VoIP technology？（）
    A

    BE

    B

    AF41

    C

    AF21

    D

    EF

    E

    AF31


    正确答案： E
    解析： 暂无解析

  • 第19题：

    单选题
    What is the Cisco recommended EDCF queue to use for voice TSPEC?（）
    A

    AC_VI

    B

    AC_VO

    C

    AC_BK

    D

    AC_BE


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    What is the typical marked DSCP value for a voice media packet in Voice over IP technology？（）
    A

    AF41

    B

    AF31

    C

    AF21

    D

    BE

    E

    EF


    正确答案： B
    解析： 暂无解析

  • 第21题：

    单选题
    Which companion switch is recommended to be installed with Cisco Smart Business Communications System？（）
    A

     C2950

    B

     C3750

    C

     ESW 500

    D

     SRW224G4


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）
    A

    AF Class

    B

    Drop Probability

    C

    CS（Class Selector Value ）

    D

    PHB （Per-Hop Behavior ）

    E

    IP Precedence

    F

    Queue Depth


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    What is the recommended Cisco DSCP value for a switch or router passing Cisco Unified Wireless IP Phone 7921G RTP packets?（）
    A

    CS3

    B

    CS1

    C

    EF

    D

    5

    E

    6


    正确答案： E
    解析： 暂无解析

  • 第24题：

    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?（）
    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.


    正确答案： D,B
    解析： 暂无解析

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