What will cause wireless voice devices to perform poorly？（）A、average signal strength that is greater than -67 dBiB、cell overlap of 15 to 20 percentC、uneven wireless coverageD、absence of coverage holes

题目

What will cause wireless voice devices to perform poorly？（）

  • A、average signal strength that is greater than -67 dBi
  • B、cell overlap of 15 to 20 percent
  • C、uneven wireless coverage
  • D、absence of coverage holes
相似考题

1.A client wants to improve the wireless coverage on the third floor of their house. The wirelessrouter is located in the basement and there is no easy way to run a cable to the third floor.Which of the following devices should be installed to extend the wireless coverage to cover the entirethird floor without running cables?（）A.SwitchB.RouterC.RepeaterD.Bridge

2.What is the minimum recommended access point overlap for voice roaming？（）A、less than 10 percentB、10 to 15 percentC、15 to 20 percentD、25 to 30 percent

3.What amount of cell overlap ensures smooth roaming for wireless endpoints？（）A、5~10%B、10 ~15%C、15~20%D、20~25%

4.()dBm is the recommended radius of a cell for a voice－ready wireless network.A.4B.6C.-67D.10

更多“What will cause wireless voice devices to perform poorly？（）A、average signal strength that is greater than -67 dBiB、cell overlap of 15 to 20 percentC、uneven wireless coverageD、absence of coverage holes”相关问题

  • 第1题：

    What is the recommended radius of a cell for a voice-ready wireless network?（）

    • A、86dBm
    • B、67dBm
    • C、19dBm
    • D、95dBm

    正确答案:B

  • 第2题：

    What are two design considerations for a WLAN to support voice?（）

    • A、Packet loss is less than one percent.
    • B、Signal strength at cell edge is approximately -67 dBm.
    • C、End-to-end delay is less than 200 ms.
    • D、Cell overlap between APs is 50 percent.

    正确答案:A,B

  • 第3题：

    Cisco recommends a decibel referenced to 1 milliwatt signal level for the coverage cell edge at thepredetermined data rate that is needed to support the VoWLAN device and call capacityrequirements. What is that signal level value for Cisco Unified Wireless IP Phones 7920， 7921G， and7925G？（）

    • A、-65 dBm
    • B、-67 dBm
    • C、-69 dBm
    • D、-70 dBm

    正确答案:B

  • 第4题：

    What is the recommended radius of a cell for a voice-ready wireless network？（）

    • A、 6 dBm
    • B、 19 dBm
    • C、 5 dBm
    • D、 7 dBm

    正确答案:D

  • 第5题：

    Which statement best describes the Cisco 2700 Location Appliance collection of location information for wireless devices?（）

    • A、all Wi-Fi devices on the WLAN send directly received signal strength indication （RSSI） information to the Cisco Wireless Location Appliance through SNMP
    • B、an AP collects RSSI information which is forwarded to wireless controllers through LWAPP. Wireless controllers forward aggregated RSSI to the location appliance through SNMP
    • C、the APs collect received signal strength indication （RSSI） information from all Wi-Fi devices and forward the information to the Cisco Wireless Location Appliance through the LWAPP
    • D、the Cisco WLAN controllers bypass the received signal strength indication （RSSI） information from all Wi-Fi devices to the Cisco Wireless Location Appliance through the LWAPP

    正确答案:B

  • 第6题：

    When conducting a wireless voice site survey， which two sizing considerations exist for thecoverage cell？（）

    • A、rogue access point detection in the coverage area
    • B、multipath issues in the coverage area
    • C、number of VoWLAN users in the coverage cell
    • D、call capacity requirements of the coverage area

    正确答案:C,D

  • 第7题：

    Which of the following is the MOST likely cause of a low wireless signal after an internal wireless adapter on a laptop was replaced?（）

    • A、The wireless card must be calibrated to the laptop.
    • B、The correct preshared encryption key must be installed to boost the signal.
    • C、The MAC address of the new wireless card will have to be added to the WAP to get the full signal.
    • D、The antenna wires for the wireless card were not attached.

    正确答案:D

  • 第8题：

    单选题
    What amount of cell overlap ensures smooth roaming for wireless endpoints?（）
    A

    5；10%

    B

    10；15%

    C

    15；20%

    D

    20；25%


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    By default， on the WLAN controller for a voice application using Cisco 7921 wireless IP phones， what is thepercentage of RF bandwidth that can be dedicated to the phones？（）
    A

    55 percent

    B

    56 percent

    C

    75 percent

    D

    85 percent


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    What is the recommended radius of a cell for a voice-ready wireless network？（）
    A

     6 dBm

    B

     19 dBm

    C

     5 dBm

    D

     7 dBm


    正确答案： A
    解析： 暂无解析

  • 第11题：

    多选题
    What are two design considerations for a WLAN to support voice?（）
    A

    Packet loss is less than one percent.

    B

    Signal strength at cell edge is approximately -67 dBm.

    C

    End-to-end delay is less than 200 ms.

    D

    Cell overlap between APs is 50 percent.


    正确答案： D,B
    解析： 暂无解析

  • 第12题：

    单选题
    Cisco recommends a decibel referenced to 1 milliwatt signal level for the coverage cell edge at thepredetermined data rate that is needed to support the VoWLAN device and call capacityrequirements. What is that signal level value for Cisco Unified Wireless IP Phones 7920， 7921G， and7925G？（）
    A

    -65 dBm

    B

    -67 dBm

    C

    -69 dBm

    D

    -70 dBm


    正确答案： C
    解析： 暂无解析

  • 第13题：

    （）dBm is the recommended radius of a cell for a voice-ready wireless network.

    • A、4
    • B、6
    • C、-67
    • D、10

    正确答案:C

  • 第14题：

    By default， on the WLAN controller for a voice application using Cisco 7921 wireless IP phones， what is thepercentage of RF bandwidth that can be dedicated to the phones？（）

    • A、55 percent
    • B、56 percent
    • C、75 percent
    • D、85 percent

    正确答案:C

  • 第15题：

    You have very few Cisco 7920 wireless IP phones on your network， but lots of wireless laptops. Youwant to increase the bandwidth available for the laptops by decreasing the bandwidth reserved forthe Cisco 7920 phones. What is the lowest percentage of voice-allocated bandwidth you can select onthe WLAN controller？（）

    • A、55 percent
    • B、75 percent
    • C、40 percent
    • D、25 percent

    正确答案:C

  • 第16题：

    By default，on the wlan controller for a voice application using cisco 7921 wireless ip phones. what is the percentage of rf bandwidth that can be dedicated to the phones？（）

    • A、75 percent
    • B、85 percent
    • C、56 percent
    • D、55 percent

    正确答案:A

  • 第17题：

    You have a very few Cisco 7920 wireless IP phones on your network， but lots of wireless laptops.You want to increase the bandwidth available for the laptops by decreasing the bandwidth reserved for the Cisco 7920 phones. What is the lowest percentage of voice-allocated bandwidthyou can select on the WLAN controller？（）

    • A、25 percent
    • B、40 percent
    • C、55 percent
    • D、75 percent

    正确答案:B

  • 第18题：

    A client wants to improve the wireless coverage on the third floor of their house. The wireless router is located in the basement and there is no easy way to run a cable to the third floor. Which of the following devices should be installed to extend the wireless coverage to cover the entire third floor without running cables?（）

    • A、Switch
    • B、Router
    • C、Repeater
    • D、Bridge

    正确答案:C

  • 第19题：

    A customer has a wireless router installed in their home office. The customer is having issues with signal strength at the opposite end of the house. Which of the following is the BEST option to increase the signal strength?（）

    • A、Install a high gain antenna focused towards the office wall.
    • B、Run CAT5e cable to all of the rooms that have poor signal strength.
    • C、Install a wireless repeater at the far end of the house.
    • D、Install a second wired router in the far end of the house.

    正确答案:C

  • 第20题：

    单选题
    What will cause wireless voice devices to perform poorly？（）
    A

    average signal strength that is greater than -67 dBi

    B

    cell overlap of 15 to 20 percent

    C

    uneven wireless coverage

    D

    absence of coverage holes


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    By default，on the wlan controller for a voice application using cisco 7921 wireless ip phones. what is the percentage of rf bandwidth that can be dedicated to the phones？（）
    A

    75 percent

    B

    85 percent

    C

    56 percent

    D

    55 percent


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    What is the minimum recommended access point overlap for voice roaming？（）
    A

    less than 10 percent

    B

    10 to 15 percent

    C

    15 to 20 percent

    D

    25 to 30 percent


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following is the MOST likely cause of a low wireless signal after an internal wireless adapter on a laptop was replaced?（）
    A

    The wireless card must be calibrated to the laptop.

    B

    The correct preshared encryption key must be installed to boost the signal.

    C

    The MAC address of the new wireless card will have to be added to the WAP to get the full signal.

    D

    The antenna wires for the wireless card were not attached.


    正确答案： D
    解析： 暂无解析

相关内容