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 up to 16 channels over multiple fiber strandsC、a WDM system that is compatible with EDFA technologyD、a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
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 .
相关考题：
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
TDD表示的含义( )。 A. transfer control protocolB. time division duplexC. time division synchronous CDMAD. time division multiple access
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
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
Which multicast mode does Auto－RP require?() A. Link-modeB. Dense modeC. Sparse modeD. Sparse-dense mode
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 completedproduct 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’soffer and recommend how many components Division L should sell to Division M if group profits are to bemaximised. (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)
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 rateB. bandwidthC. signal lossD. Dense Wavelength Division Multiplexing (DWDM)
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 up to 16 channels over multiple fiber strandsC. a WDM system that is compatible with EDFA technologyD. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
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.
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.
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.
Which of the following multicast mode does Auto-RP require？（）A、Link-modeB、Dense modeC、Sparse modeD、Sparse-dense mode
OWM的英文全称是（）A、Optical Wavelength MultiplexB、Optical wavelength MonitorC、Optical wavelength MemoryD、All are right
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
OFDM的英文全称是（）A、Orthogonal Frequency Division MultiplexingB、Outstanding Frequency Division MultiplexingC、Overwhelming Frequency Division MultiplexingD、Orthogonal Frequency Division Modulation
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 rateB、bandwidthC、signal lossD、Dense Wavelength Division Multiplexing (DWDM)
Which multicast mode does Auto-RP require?（）A、Link-modeB、Dense modeC、Sparse modeD、Sparse-dense mode
A ZXWM M900 system provides several wavelength stabilizing methods, including （）.A、内置波长反馈方式 Built-in wavelength feedbackB、外置波长反馈方式 External wavelength feedbackC、自动功率控制反馈方式 Automatic power control feedbackD、温度控制反馈方式 Temperature control feedback
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)
WDM全称为（）。A、wavelength division multiplexingB、waveguide division multiplexingC、wavelength dimension multiplexingD、waveguide division mode
DWDM全称为（）。A、dense wavelength division multiplexingB、dense waveguide division multiplexingC、divided wavelength dimension multiplexingD、divided waveguide dimension mode
单选题TDD表示的含义（）。Atransfer control protocolBtime division duplexCtime division synchronous CDMADtime division multiple access
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?（）AI/O rateBbandwidthCsignal lossDDense Wavelength Division Multiplexing (DWDM)
多选题Which two statements are true about optical networks?（）ASONET and SDH both use time-division multiplexing.BAn optical transport network system uses time-division multiplexing.CSONET and SDH both use wavelength-division multiplexing.DAn optical transport network system uses wavelength-division multiplexing.