单选题What is the maximum attainable bandwidth using an analog data modem？（）A 28.8kbpsB 56kbpsC 128kbpsD 1544kbps

题目
单选题
What is the maximum attainable bandwidth using an analog data modem？（）
A

28.8kbps

B

56kbps

C

128kbps

D

1544kbps

相似考题

1.The maximum data rate of any single wireless link can be described by the shannon’s theorem which is related to the（）in hertz，and the（）on the channelA．signal frequency B．bandwidth C．carrier frequency D．noise frequency A．signal B．caeeier C．noise D．data signal

2.What is the maximum attainable bandwidth using an analog data modem?()A.28.8kbpsB.56kbpsC.128kbpsD.1544kbps

3.Digital data can also be represented by (71)signals by use ofa modem. The modem converts a series of binary voltage (72) into an analog signal by encoding the digital data ontoa carrier frequency. The resulting signal occupies a certam spectrum of (73) centered about the carTier and may be propagated acrossa medium suitable for that carrier. The most common modems represent digital data in the voice(74)and hence allow those datato be propagated over ordinary voice-grade (75 )lines At the other end of the line, another modem demodulates the signal to recover the original data(71)A.analogB.digitalC.ModemD.electric

4.Digital computer is controlled by internally stored programs and(66) of using common storage for all or part of a program and also for all or part of the data necessary for the execution of the programs; executing user-written or user-designated programs; performing user-designated manipulation of digitally represented discrete data, including.(67) operations and logic operations; and executing programs that(68) themselves during their execution.Analog computer's operations are analogous to the(69) of another system and that accepts, processes, and produces analog data.(70) computer integrates analog computer components and digital computer components by interconnection of digital-to-analog converters and analog-to-digital converters.A．qualifiedB．competentC．capableD．able

更多“单选题What is the maximum attainable bandwidth using an analog data modem？（）A 28.8kbpsB 56kbpsC 128kbpsD 1544kbps”相关问题

  • 第1题：

    What are two considerations to using IP Multicast delivery? ()

    A. no congestion avoidance

    B. not for bandwidth intensive applications

    C. no guaranteed delivery mechanism

    D. source sends multiple data streams out each interface


    参考答案：A, C

  • 第2题：

    When analog signals are digitized using the G.711 codec， voice samples are encapsulated into protocol data units （PDUs） involving which three headers？ （）

    • A、IP
    • B、TCP
    • C、RTP
    • D、UDP
    • E、H323
    • F、CRTP

    正确答案:A,C,D

  • 第3题：

    What is the default maximum reservable bandwidth （percentage） by any single flow on an interface after enabling RSVP？（）

    • A、75 percent
    • B、60 percent
    • C、56 percent
    • D、50 percent
    • E、25 percent

    正确答案:A

  • 第4题：

    What are two steps to define a QoS policy？（）

    • A、set a minimum bandwidth guarantee
    • B、increase bandwidth
    • C、determine a specific transfer rate
    • D、establish timers
    • E、configure CBWFQ for best-effort traffic
    • F、set a maximum bandwidth limit

    正确答案:A,F

  • 第5题：

    What is the maximum attainable bandwidth using an analog data modem？（）

    • A、28.8kbps
    • B、56kbps
    • C、128kbps
    • D、1544kbps

    正确答案:B

  • 第6题：

    What is the maximum data rate specified for IEEE 802.11b WLANs?（）

    • A、10 Mbps
    • B、11 Mbps
    • C、54 Mbps
    • D、100 Mbps

    正确答案:D

  • 第7题：

    What happens when you enable QoS bandwidth detection? （）(Choose two.)

    • A、Circuit speed is reduced by 2% for overhead.
    • B、WAN speed can be configured to the LAN speed.
    • C、Bandwidth is adjusted based on minimum and maximum settings.
    • D、WAN bandwidth is detected based on acknowledgement of metapackets.

    正确答案:B,D

  • 第8题：

    多选题
    When analog signals are digitized using the G.711 codec， voice samples are encapsulated into protocol data units （PDUs） involving which three headers？ （）
    A

    IP

    B

    TCP

    C

    RTP

    D

    UDP

    E

    H323

    F

    CRTP


    正确答案： A,F
    解析： 暂无解析

  • 第9题：

    单选题
    What is the maximum attainable bandwidth using an analog data modem？（）
    A

    28.8kbps

    B

    56kbps

    C

    128kbps

    D

    1544kbps


    正确答案： C
    解析： 暂无解析

  • 第10题：

    多选题
    What are two steps to define a QoS policy？（）
    A

    set a minimum bandwidth guarantee

    B

    increase bandwidth

    C

    determine a specific transfer rate

    D

    establish timers

    E

    configure CBWFQ for best-effort traffic

    F

    set a maximum bandwidth limit


    正确答案： E,C
    解析： 暂无解析

  • 第11题：

    单选题
    What is the maximum data rate specified for IEEE 802.11b WLANs?（）
    A

    10Mbps

    B

    11Mbps

    C

    54Mbps

    D

    100Mbps


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    When using WMM Call Admission Control， what are the default bandwidth values for video on802.11a/n（）？
    A

    Max RF bandwidth is 75 percent， reserved roaming bandwidth is 6 percent.

    B

    Max RF bandwidth is 50 percent， reserved roaming bandwidth is 10 percent.

    C

    Max RF bandwidth is 50 percent， reserved roaming bandwidth is 15 percent.

    D

    Max RF bandwidth is 0 percent， reserved roaming bandwidth is 0.


    正确答案： C
    解析： 暂无解析

  • 第13题：

    What is the difference between a CSU／DSU and a modem?()

    A. A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.

    B. A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line.

    C. A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.

    D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.


    参考答案：D

  • 第14题：

    You are troubleshooting a problem with a cisco 7920 wireless ip phone that is causing the phone to drop calls. the problem appears to be a roaming bandwidth issuE.  in order to verify what kind of issue it is， you decide to increase the bandwidth reserved for roaming on the wlan controller to the maximum. What level do you set the bandwidth to？（）

    • A、25 percent
    • B、15 percent
    • C、5 percent
    • D、35 percent

    正确答案:A

  • 第15题：

    What are two considerations to using IP Multicast delivery? （）

    • A、no congestion avoidance
    • B、not for bandwidth intensive applications
    • C、no guaranteed delivery mechanism
    • D、source sends multiple data streams out each interface

    正确答案:A,C

  • 第16题：

    What happens when you enable QoS bandwidth detection? （）(Choose two.)

    • A、Circuit speed is reduced by 2% for overhead.
    • B、WAN speed can be configured to the LAN speed.
    • C、Bandwidth is adjusted based on minimum and maximum settings
    • D、WAN bandwidth is detected based on acknowledgement of metapackets.

    正确答案:B,D

  • 第17题：

    What is the difference between a CSU/DSU and a modem?（）

    • A、A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line
    • B、A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line
    • C、A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line
    • D、A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line

    正确答案:D

  • 第18题：

    Which test checks the transmitter and receiver of a local modem？（）

    • A、data parity
    • B、analog loop back
    • C、local digital loop back
    • D、remote digital loop back

    正确答案:B

  • 第19题：

    单选题
    You are troubleshooting a problem with a Cisco 7920 wireless IP phone that is causing the phoneto drop calls. The problem appears to be a roaming bandwidth issue. In order to verify what kindof issue it is， you decide to increase the bandwidth reserved for roaming on the WLAN controllerto the maximum. What level do you set the bandwidth to？（）
    A

    25 percent

    B

    15 percent

    C

    5 percent

    D

    35 percent


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    What is the default maximum reservable bandwidth （percentage） by any single flow on an interface after enabling RSVP？（）
    A

    75 percent

    B

    60 percent

    C

    56 percent

    D

    50 percent

    E

    25 percent


    正确答案： D
    解析： 暂无解析

  • 第21题：

    多选题
    What are two considerations to using IP Multicast delivery? （）
    A

    no congestion avoidance

    B

    not for bandwidth intensive applications

    C

    no guaranteed delivery mechanism

    D

    source sends multiple data streams out each interface


    正确答案： A,C
    解析： 暂无解析

  • 第22题：

    单选题
    You are troubleshooting a problem with a Cisco 7920 wireless IP phone that is causing the phoneto drop calls. The problem appears to be a roaming bandwidth issue. In order to verify what kind ofissue it is， you decide to increase the bandwidth reserved for roaming on the WLAN controller tothe maximum. What level do you set the bandwidth to？（）
    A

    25 percent

    B

    15 percent

    C

    5 percent

    D

    35 percent


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    What is the difference between a CSU/DSU and a modem?（）
    A

    A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line.

    B

    A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line.

    C

    A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line.

    D

    A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line.


    正确答案： B
    解析： 暂无解析

  • 第24题：

    单选题
    What is the difference between a CSU/DSU and a modem?（）
    A

    A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line

    B

    A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line

    C

    A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line

    D

    A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line


    正确答案： A
    解析： 暂无解析

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