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Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）A、optical technology for transmitting up to 32 channels over multiple fiber strandsB、optical technology for transmitting

题目

Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）

  • A、optical technology for transmitting up to 32 channels over multiple fiber strands
  • B、optical technology for transmitting up to 16 channels over multiple fiber strands
  • C、a WDM system that is compatible with EDFA technology
  • D、a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
相似考题

1.在通信专业中，WDM的英文全称是（ ），“吞吐量”英文通常翻译为（ ）。[1分]A.Wierless Digital ModulationB.Wave Division MultiplexingC.Wavelength Division MultiplexingD.Wireless Data Modulation

2.Which of the following could serve as an appropriate title for the passage ?A．The Theory of Division of LaborB．Adam Smith as the Discoverer of Division of LaborC．Adam Smith, the English EconomistD．Division of Labor, an Efficient Way of Organizing Work

3.在通信专业中，WDM的英文全称是（），“吞吐量”英文通常翻译为（）。A．Wierless Digital Modulation B．Wave Division Multiplexing C．Wavelength Division Multiplexing D．Wireless Data Modulation A．traffic flow B．rate C．throughout D．throughput

4.TDD表示的含义( )。A. transfer control protocolB. time division duplexC. time division synchronous CDMAD. time division multiple access

更多“Dense Wavelength Division Multip”相关问题

  • 第1题：

    Which multicast mode does Auto－RP require?()

    A. Link-mode

    B. Dense mode

    C. Sparse mode

    D. Sparse-dense mode


    参考答案：D

  • 第2题：

    In order to link data centers, a customer is evaluating the installation of fiber optic cable between buildings that are 400 meters apart. The installation will require multiple patch panels and cables.Which of the following is the most critical factor to consider for this installation?（）

    A. I/O rate

    B. bandwidth

    C. signal loss

    D. Dense Wavelength Division Multiplexing (DWDM)


    参考答案：C

  • 第3题：


    What did the sentence“The other countries had respected this division so long as they remained Catholic”imply？( )

    A.It implied this division could not be respected long.
    B.It implied this division would not face a challenge.
    C.It implied this division would be respected forever.
    D.It implied the power of the Pope would never decline.

    答案：A
    解析：
    推理题。第三段的最后两句话指出“1494年，哥伦布首次远航美洲后的两年，教皇亚历山大六世就把这块大洋彼岸未曾勘探的世界分给西班牙和葡萄牙作为对他们业绩的褒奖(赏赐)并制止他们开战。只要其他国家依然信仰天主教，他们就会尊重这种瓜分”。题目中as long as是一个条件，一旦这个条件不存在，那就不会再尊重。另一方面也说明教皇不仅统治宗教，在其他方面也有至高无上的权力。所以B项“不会面临挑战”、C项“永远得到尊重”和D项“教皇权力永不衰退”均不符合题意。

  • 第4题：

    哪一种接口模式必须在Auto-RP环境中使用（）

    • A、Sparse mode  
    • B、Dense mode  
    • C、Sparse-dense mode  
    • D、Dense-sparse mode

    正确答案:C

  • 第5题：

    Which two statements are true about optical networks?（）

    • A、SONET and SDH both use time-division multiplexing.
    • B、An optical transport network system uses time-division multiplexing.
    • C、SONET and SDH both use wavelength-division multiplexing.
    • D、An optical transport network system uses wavelength-division multiplexing.

    正确答案:A,D

  • 第6题：

    OWM的英文全称是（）

    • A、Optical Wavelength Multiplex
    • B、Optical wavelength Monitor
    • C、Optical wavelength Memory
    • D、All are right

    正确答案:B

  • 第7题：

    FDM的英文是（）

    • A、Overload Frequency Division Multiplexing 
    • B、Orthogonal Frequency Division Multiplexing 
    • C、Overwhelming Frequency Division Multiplexing 
    • D、Outstanding Frequency Division Multiplexing

    正确答案:B

  • 第8题：

    In order to link data centers, a customer is evaluating the installation of fiber optic cable between buildings that are 400 meters apart. The installation will require multiple patch panels and cables. Which of the following is the most critical factor to consider for this installation?（）

    • A、I/O rate
    • B、bandwidth
    • C、signal loss
    • D、Dense Wavelength Division Multiplexing (DWDM)

    正确答案:C

  • 第9题：

    A ZXWM M900 system provides several wavelength stabilizing methods, including （）.

    • A、内置波长反馈方式 Built-in wavelength feedback
    • B、外置波长反馈方式 External wavelength feedback
    • C、自动功率控制反馈方式 Automatic power control feedback
    • D、温度控制反馈方式 Temperature control feedback

    正确答案:A,B,D

  • 第10题：

    WDM全称为（）。

    • A、wavelength division multiplexing
    • B、waveguide division multiplexing
    • C、wavelength dimension multiplexing
    • D、waveguide division mode

    正确答案:A

  • 第11题：

    单选题
    TDD表示的含义（）。
    A

    transfer control protocol

    B

    time division duplex

    C

    time division synchronous CDMA

    D

    time division multiple access


    正确答案： A
    解析： 暂无解析

  • 第12题：

    多选题
    Which two statements are true about optical networks?（）
    A

    SONET and SDH both use time-division multiplexing.

    B

    An optical transport network system uses time-division multiplexing.

    C

    SONET and SDH both use wavelength-division multiplexing.

    D

    An optical transport network system uses wavelength-division multiplexing.


    正确答案： A,B
    解析： 暂无解析

  • 第13题：

    A manufacturing company, Man Co, has two divisions: Division L and Division M. Both divisions make a single standardised product. Division L makes component L, which is supplied to both Division M and external customers.

    Division M makes product M using one unit of component L and other materials. It then sells the completed

    product M to external customers. To date, Division M has always bought component L from Division L.

    The following information is available:

    Division L charges the same price for component L to both Division M and external customers. However, it does not incur the selling and distribution costs when transferring internally.

    Division M has just been approached by a new supplier who has offered to supply it with component L for $37 per unit. Prior to this offer, the cheapest price which Division M could have bought component L for from outside the group was $42 per unit.

    It is head office policy to let the divisions operate autonomously without interference at all.

    Required:

    (a) Calculate the incremental profit/(loss) per component for the group if Division M accepts the new supplier’s

    offer and recommend how many components Division L should sell to Division M if group profits are to be

    maximised. (3 marks)

    (b) Using the quantities calculated in (a) and the current transfer price, calculate the total annual profits of each division and the group as a whole. (6 marks)

    (c) Discuss the problems which will arise if the transfer price remains unchanged and advise the divisions on a suitable alternative transfer price for component L. (6 marks)


    正确答案：
    (a)MaximisinggroupprofitDivisionLhasenoughcapacitytosupplybothDivisionManditsexternalcustomerswithcomponentL.Therefore,incrementalcostofDivisionMbuyingexternallyisasfollows:CostperunitofcomponentLwhenboughtfromexternalsupplier:$37CostperunitforDivisionLofmakingcomponentL:$20.ThereforeincrementalcosttogroupofeachunitofcomponentLbeingboughtinbyDivisionMratherthantransferredinternally:$17($37–20).Fromthegroup’spointofview,themostprofitablecourseofactionisthereforethatall120,000unitsofcomponentLshouldbetransferredinternally.(b)CalculatingtotalgroupprofitTotalgroupprofitswillbeasfollows:DivisionL:Contributionearnedpertransferredcomponent=$40–$20=$20Profitearnedpercomponentsoldexternally=$40–$24=$16(c)ProblemswithcurrenttransferpriceandsuggestedalternativeTheproblemisthatthecurrenttransferpriceof$40perunitisnowtoohigh.Whilstthishasnotbeenaproblembeforesinceexternalsupplierswerecharging$42perunit,itisaproblemnowthatDivisionMhasbeenofferedcomponentLfor$37perunit.IfDivisionMnowactsinitsowninterestsratherthantheinterestsofthegroupasawhole,itwillbuycomponentLfromtheexternalsupplierratherthanfromDivisionL.ThiswillmeanthattheprofitsofthegroupwillfallsubstantiallyandDivisionLwillhavesignificantunusedcapacity.Consequently,DivisionLneedstoreduceitsprice.Thecurrentpricedoesnotreflectthefactthattherearenosellinganddistributioncostsassociatedwithtransferringinternally,i.e.thecostofsellinginternallyis$4lessforDivisionLthansellingexternally.So,itcouldreducethepriceto$36andstillmakethesameprofitonthesesalesasonitsexternalsales.ThiswouldthereforebethesuggestedtransferpricesothatDivisionMisstillsaving$1perunitcomparedtotheexternalprice.Atransferpriceof$37wouldalsopresumablybeacceptabletoDivisionMsincethisisthesameastheexternalsupplierisoffering.

  • 第14题：

    Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?()

    A. optical technology for transmitting up to 32 channels over multiple fiber strands

    B. optical technology for transmitting up to 16 channels over multiple fiber strands

    C. a WDM system that is compatible with EDFA technology

    D. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .


    参考答案：C, D

  • 第15题：

    什么是波长变换（WC://Wavelength Conversion）？


    正确答案: 是将信息从承载它的一个波长上转到另一个波长上。

  • 第16题：

    Which three statements are true about IP multicast configuration?（）

    • A、PIM sparse - dense mode and PIM dense mode require an RP on the network.
    • B、PIM sparse mode and PIM dense mode require an RP on the network.
    • C、PIM sparse mode interfaces are always added to the multicast routing table in a router.
    • D、PIM sparse mode and PIM sparse - dense mode require an RP on the network.
    • E、PIM dense mode interfaces are always added to the multicast routing table in a router.
    • F、PIM sparse - dense mode acts as PIM dense mode if an RP is not known.

    正确答案:D,E,F

  • 第17题：

    Which of the following multicast mode does Auto-RP require？（）

    • A、Link-mode
    • B、Dense mode
    • C、Sparse mode
    • D、Sparse-dense mode

    正确答案:B

  • 第18题：

    DWDM英文全称Dense Wavelengh Division Multiplexing，中文释义为（）。


    正确答案:密集波分复用

  • 第19题：

    OFDM的英文全称是（）

    • A、Orthogonal Frequency Division Multiplexing
    • B、Outstanding Frequency Division Multiplexing
    • C、Overwhelming Frequency Division Multiplexing
    • D、Orthogonal Frequency Division Modulation

    正确答案:A

  • 第20题：

    Which multicast mode does Auto-RP require?（）

    • A、Link-mode
    • B、Dense mode
    • C、Sparse mode
    • D、Sparse-dense mode

    正确答案:D

  • 第21题：

    WDM与（）本质是相同的。

    • A、OFDM(optical frequency division multiplexing)
    • B、OTDM(optical time division multiplexing)
    • C、CDM(code division multiplexing)
    • D、EDFA(erbium doped fiber amplifier)

    正确答案:A

  • 第22题：

    DWDM全称为（）。

    • A、dense wavelength division multiplexing
    • B、dense waveguide division multiplexing
    • C、divided wavelength dimension multiplexing
    • D、divided waveguide dimension mode

    正确答案:A

  • 第23题：

    单选题
    In order to link data centers, a customer is evaluating the installation of fiber optic cable between buildings that are 400 meters apart. The installation will require multiple patch panels and cables. Which of the following is the most critical factor to consider for this installation?（）
    A

    I/O rate

    B

    bandwidth

    C

    signal loss

    D

    Dense Wavelength Division Multiplexing (DWDM)


    正确答案： D
    解析： 暂无解析

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