单选题Which of the following is the primary purpose of impedance matched volume control？（）A Maintains proper speaker phaseB Protects the amplifier from damageC Protects the digital systems from damageD Amplifies the speaker signal

题目
单选题
Which of the following is the primary purpose of impedance matched volume control？（）
A

Maintains proper speaker phase

B

Protects the amplifier from damage

C

Protects the digital systems from damage

D

Amplifies the speaker signal

相似考题

1.Which two benefits does the Juniper DX provide?() (Choose two.)A. It compresses all images.B. It protects servers from DDoS attacks.C. It protects servers from SynFlood attacks.D. It loads all content from web servers to flash.

2.The wooden planking that protects the tank top from cargo loading is called ______．A.CeilingB.ShoresC.FramesD.Toms

3.Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？ （）A、 Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannotB、 UDLD protects against STP failures caused by cabling problems that create one-way links.C、 Loop guard detects and protects against duplicate packets being received and transmitted on different portsD、 UDLD protects against unidirectional cabling problems on copper and fiber media.E、 Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.

4.Which well－known community prevents a BGP speaker from announcing the associated prefix to itsinternal peers?()A. no-exportB. no-advertiseC. no-readvertiseD. no-export-subconfed

更多“单选题Which of the following is the primary purpose of impedance matched volume control？（）A Maintains proper speaker phaseB Protects the amplifier from damageC Protects the digital systems from damageD Amplifies the speaker signal”相关问题

  • 第1题：

    Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）

    • A、Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot.
    • B、UDLD protects against STP failures caused by cabling problems that create one-way links.
    • C、Loop guard detects and protects against duplicate packets being received and transmitted on different ports.
    • D、UDLD protects against unidirectional cabling problems on copper and fiber media.
    • E、Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.

    正确答案:B,E

  • 第2题：

    Which of the following cabling would be MOST commonly used with digital volume controls？（）

    • A、Unshielded twisted pair
    • B、RJ-59
    • C、16/4 solid conductors
    • D、Speaker Wire

    正确答案:A

  • 第3题：

    Which of the following would be the impedance of an 8 ohm and a 4 ohm speaker that are wired in parallel？（）

    • A、2.66 ohms
    • B、Less than 1 ohm
    • C、4 ohms
    • D、12 ohms

    正确答案:A

  • 第4题：

    Which well-known community prevents a BGP speaker from announcing the associated prefix to itsinternal peers?（）

    • A、no-export
    • B、no-advertise
    • C、no-readvertise
    • D、no-export-subconfed

    正确答案:B

  • 第5题：

    Which two statements are true about broadband cable （HFC） systems？（）

    • A、Cable modems only operate at Layer 1 of the OSI model.
    • B、Cable modems operate at Layers 1 and 2 of the OSI model.
    • C、Cable modems operate at Layers 1， 2， and 3 of the OSI model.
    • D、A function of the cable modem termination system （CMTS） is to convert the modulated signal from the cable modem into a digital signal.
    • E、A function of the cable modem termination system is to convert the digital data stream from the end user host into a modulated RF signal for transmission onto the cable system.

    正确答案:B,D

  • 第6题：

    Which of the following is the correct signal flow for an analog multi-room audio system？（）

    • A、Source，Volume Control，Speaker，Amp
    • B、Source，Amp，Volume Control，Speaker
    • C、Amp，Source，Volume Control，Speaker
    • D、Speaker，Amp，Volume Control，Source

    正确答案:B

  • 第7题：

    单选题
    Which of the following would be the impedance of an 8 ohm and a 4 ohm speaker that are wired in parallel？（）
    A

    2.66 ohms

    B

    Less than 1 ohm

    C

    4 ohms

    D

    12 ohms


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following procedures should occur before removing a failing disk from a volume group?（）
    A

    Veryoff the volume group

    B

    Unmount any filesystems on the disk

    C

    Remove all physical partitions on the disk

    D

    Unmount mirrored filesystems from the disk


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    A computer’s case fan protects against which of the following environmental concerns?（）
    A

    Pressure

    B

    Heat

    C

    Brown out

    D

    Cold


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    Where is the guest speaker from?
    A

    America.

    B

    UK.

    C

    China.


    正确答案： A
    解析：
    录音明确提到The guest speaker is Professor Smith from the United States and…。

  • 第11题：

    单选题
    Each time the distance from the speaker is doubled， volume decreases by（）.
    A

    3dB

    B

    6dB

    C

    12dB

    D

    24dB


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    Which of the following is the correct signal flow for an analog multi-room audio system？（）
    A

    Source，Volume Control，Speaker，Amp

    B

    Source，Amp，Volume Control，Speaker

    C

    Amp，Source，Volume Control，Speaker

    D

    Speaker，Amp，Volume Control，Source


    正确答案： A
    解析： 暂无解析

  • 第13题：

    What is the purpose of Dual Ring Interconnect with D C for SDH rings？（）

    • A、Protects signals when a ring switch fails
    • B、Protects signals when multiple span switches fail
    • C、Protects pre-emptible traffic from being dropped when a ring switch occurs
    • D、Protects signals against any combination of link failure in each ring

    正确答案:D

  • 第14题：

    Each time the distance from the speaker is doubled， volume decreases by（）.

    • A、3dB
    • B、6dB
    • C、12dB
    • D、24dB

    正确答案:B

  • 第15题：

    Which two benefits does the Juniper DX provide?（） (Choose two.)

    • A、It compresses all images.
    • B、It protects servers from DDoS attacks.
    • C、It protects servers from SynFlood attacks.
    • D、It loads all content from web servers to flash.

    正确答案:B,C

  • 第16题：

    What are three facts control plane policing？ （）

    • A、a set of rules that can be established and associated with the ingress and egress ports of the control plane
    • B、improves performance of the control plane by marking control plane packets with DSCPEF
    • C、protects the control plane on a router from DoS attacks
    • D、treats the control plane as a separate entity with its own ingress （input） and egress （output） ports
    • E、provides the control plane with a separate token bucket
    • F、enhances security of the control plane by tunneling packets to and from the control plane

    正确答案:A,C,D

  • 第17题：

    A user selects their proper domain and is unable to log into their Windows computer. The errorstates： System cannot log you on to the domain because the systems computer account in its primary domain is missing or the password on that account is incorrect.  Which of the following is the MOST likely cause for this error？（）

    • A、 The computers account was removed from Active Directory.
    • B、 The users account was removed from Active Directory.
    • C、 The computer was disjoined from the domain.
    • D、 The user typed in the wrong password.

    正确答案:A

  • 第18题：

    Which of the following is the primary purpose of impedance matched volume control？（）

    • A、Maintains proper speaker phase
    • B、Protects the amplifier from damage
    • C、Protects the digital systems from damage
    • D、Amplifies the speaker signal

    正确答案:B

  • 第19题：

    单选题
    Which of the following is the primary purpose of impedance matched volume control？（）
    A

    Maintains proper speaker phase

    B

    Protects the amplifier from damage

    C

    Protects the digital systems from damage

    D

    Amplifies the speaker signal


    正确答案： D
    解析： 暂无解析

  • 第20题：

    单选题
    Which well-known community prevents a BGP speaker from announcing the associated prefix to itsinternal peers?（）
    A

    no-export

    B

    no-advertise

    C

    no-readvertise

    D

    no-export-subconfed


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    Which of the following is true according to the speaker?
    A

    The atmosphere is marked with turbulences.

    B

    The deep waters are full of turbulent currents.

    C

    The atmosphere is heated from above.

    D

    The deep waters are heated from below.


    正确答案： A
    解析：
    录音中提到“Unlike the atmosphere, which is characterized by turbulent weather systems, the deep waters are fairly stable.”，由此可知大气层的特点是恶劣多变的天气系统，不像大气层，深水水域则相当稳定，所以A项正确。

  • 第22题：

    单选题
    A user selects their proper domain and is unable to log into their Windows computer. The errorstates： System cannot log you on to the domain because the systems computer account in its primary domain is missing or the password on that account is incorrect.  Which of the following is the MOST likely cause for this error？（）
    A

     The computers account was removed from Active Directory.

    B

     The users account was removed from Active Directory.

    C

     The computer was disjoined from the domain.

    D

     The user typed in the wrong password.


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    When configuring surround sound systems， speaker delay is used to compensate for speaker（）.
    A

    distance

    B

    power

    C

    size

    D

    efficiency


    正确答案： C
    解析： 暂无解析

  • 第24题：

    多选题
    Which two benefits does the Juniper DX provide?（） (Choose two.)
    A

    It compresses all images.

    B

    It protects servers from DDoS attacks.

    C

    It protects servers from SynFlood attacks.

    D

    It loads all content from web servers to flash.


    正确答案： C,A
    解析： 暂无解析

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