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多选题
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 .
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更多 “多选题Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）Aoptical technology for transmitting up to 32 channels over multiple fiber strandsBoptical technology for transmitting up to 16 channels over multiple fiber strandsCa WDM system that is compatible with EDFA technologyDa technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .” 相关考题
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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
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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
考题
对于LTE物理层的多址方案，在下行方向上采用基于循环前缀(Cyclic Prefix，CP)的正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)，在上行方向上采用基于循环前缀的单载波频分多址(Single Carrrier-Frequency Division Multiplexing Access，SC-FDMA)。()
考题
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 rateB. bandwidthC. signal lossD. Dense Wavelength Division Multiplexing (DWDM)
考题
OFDM的英文是()A.OverloadFrequencyDivisionMultiplexingB.Orthogonal?Frequency?Division?MultiplexingC.Overwhelming?Frequency?DivisionMultiplexingD.Outstanding?Frequency?Division?Multiplexing
考题
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 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 .
考题
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 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 .
考题
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.
考题
For a DWDM system, the wavelength selection and frequency spacing comply with（），recommendation while that of a CWDM system comply with the requirements of （）。
考题
对于LTE物理层的多址方案，在下行方向上采用基于循环前缀（Cyclic Prefix，CP）的正交频分复用（Orthogonal Frequency Division Multiplexing，OFDM），在上行方向上采用基于循环前缀的单载波频分多址（Single Carrrier-Frequency Division Multiplexing Access，SC-FDMA）。在上行方向上采用基于循环前缀的单载波频分多址（Single Carrrier-Frequency Division Multiplexing Access，SC-FDMA）。
考题
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
考题
You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual ring topology?（）A、DynamicTrunking ProtocolB、Resilient Packet RingC、Synchronous Digital HierarchyD、Coarse Wave Division Multiplexing
考题
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 rateB、bandwidthC、signal lossD、Dense Wavelength Division Multiplexing (DWDM)
考题
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)
考题
WDM全称为（）。A、wavelength division multiplexingB、waveguide division multiplexingC、wavelength dimension multiplexingD、waveguide division mode
考题
DWDM全称为（）。A、dense wavelength division multiplexingB、dense waveguide division multiplexingC、divided wavelength dimension multiplexingD、divided waveguide dimension mode
考题
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 rateB
bandwidthC
signal lossD
Dense Wavelength Division Multiplexing (DWDM)
考题
单选题在向用户介绍DWDM网络时，有时候需要解释DWDM的英文全写，关于DWDM的两个“D”英文全写分别是（）A
Dense；DivisionB
Division；DenseC
Dense；DistributionD
Meissner；Division
考题
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.
考题
单选题You are the Cisco Network Designer in Cisco.com. Which of these is a Layer 2 transport architecture that provides packet-based transmission optimized for data based on a dual ringtopology？（）A
Dynamic Trunking ProtocolB
Resilient Packet RingC
Synchronous Digital HierarchyD
Coarse Wave Division Multiplexing
考题
名词解释题Time division multiplexing时分多路复用
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