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An optical cable is used to transmit：（）
- A、digital audio from a component to a receiver.
- B、analog video from a component to a receiver.
- C、analog audio from a component to a receiver.
- D、digital video from a component to a receiver.
参考答案
更多 “An optical cable is used to transmit：（）A、digital audio from a component to a receiver.B、analog video from a component to a receiver.C、analog audio from a component to a receiver.D、digital video from a component to a receiver.” 相关考题
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无源光网络由哪些部分构成?()
A.OLT（Optical Line Terminal）－光线路终端B.ONU（Optical NetworkUnit）－光网络单元C.ONT（Optical Network Terminal）－光网络终端D.ODN（Optical Distribution Network）－光分配网
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What three in combination are factors that can cause four－wave mixing in fiber－optic cables? ()(Choose three.)
A. low optical powerB. high optical powerC. few optical channelsD. many optical channelsE. low chromatic dispersionF. high chromatic dispersionG. too much power differential in the optical channels
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In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?（）A、the signal to noise of the current optical amplifierB、the signal to noise of the previous amplifier or sourceC、the signal to noise introduced by the optical multiplexerD、the accumulated noise to signal ratio of the optical channel
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What three in combination are factors that can cause four-wave mixing in fiber-optic cables? （）(Choose three.)A、low optical powerB、high optical powerC、few optical channelsD、many optical channelsE、low chromatic dispersionF、high chromatic dispersionG、too much power differential in the optical channels
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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.
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A customer reports the optical drive is no longer responding. Which of the following questionsshould be asked FIRST?（）A、“Did you log in with an administrator account?”B、“Have you been to any inappropriate websites?”C、“What have you changed since the optical drive worked properly?”D、“What has changed since the optical drive worked properly?”
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无源光网络由哪些部分构成？（）A、OLT（Optical Line Terminal）－光线路终端B、ONU（Optical NetworkUnit）－光网络单元C、ONT（Optical Network Terminal）－光网络终端D、ODN（Optical Distribution Network）－光分配网
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What two descriptions best define DWDM？ （）A、 a WDM system that is compatible with EDFA technologyB、 an optical technology for transmitting up to 16 channels over multiple fiber strandsC、 an optical technology for transmitting up to 32 channels over multiple fiber strandsD、 a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDME、 a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM
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Which device creates an OEO conversion？ （）A、 amplifierB、 attenuatorC、 regeneratorD、 light emitterE、 optical switchF、 optical receiverG、 fiber-optic cable
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A customer wants to install an IBM BladeCenter infrastructure but is concerned about the cost of the internal fibre switches. Consequently. the customer wants to use the Optical Pass-Thru Module （OPM）. What TRUE statement should be mentioned to the customer regarding the OPM？（）A、You can not put the Optical Pass-Thru Module in the same IBM BladeCenter chassis as a Cisco Intelligent Ethernet Switch.B、Using blade servers with the Optical Pass-Thru Module will require more fibre ports on the external fibre switch.C、The Optical Pass-Thru Module does not provide the customer with an opportunity to reuse their fibre switch.D、The blade servers do not work with the Optical Pass-Thru Module.
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SONET全称为（）A、synchronous optimized networkB、synchronous optical networkC、synthesis optimized networkD、synthesis optical network
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单选题In the OSNR model for EDFA amplifiers， SNR OUT = 1/（1/SNR IN + FhvB/P IN ）， what does SNR IN represent？（）A
the signal to noise of the current optical amplifierB
the signal to noise of the previous amplifier or sourceC
the signal to noise introduced by the optical multiplexerD
the accumulated noise to signal ratio of the optical channel
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单选题A customer reports the optical drive is no longer responding. Which of the following questionsshould be asked FIRST?（）A
“Did you log in with an administrator account?”B
“Have you been to any inappropriate websites?”C
“What have you changed since the optical drive worked properly?”D
“What has changed since the optical drive worked properly?”
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多选题What three in combination are factors that can cause four-wave mixing in fiber-optic cables？（）Alow optical poweBhigh optical powerCfew optical channelsDmany optical channelsElow chromatic dispersionFhigh chromatic dispersionGtoo much power differential in the optical channels
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多选题What two descriptions best define DWDM？ （）Aa WDM system that is compatible with EDFA technologyBan optical technology for transmitting up to 16 channels over multiple fiber strandsCan optical technology for transmitting up to 32 channels over multiple fiber strandsDa technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDMEa technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM
考题
单选题In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?（）A
the signal to noise of the current optical amplifierB
the signal to noise of the previous amplifier or sourceC
the signal to noise introduced by the optical multiplexerD
the accumulated noise to signal ratio of the optical channel
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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.
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多选题What three in combination are factors that can cause four-wave mixing in fiber-optic cables? （）(Choose three.)Alow optical powerBhigh optical powerCfew optical channelsDmany optical channelsElow chromatic dispersionFhigh chromatic dispersionGtoo much power differential in the optical channels
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单选题Which device creates an OEO conversion？ （）A
amplifierB
attenuatorC
regeneratorD
light emitterE
optical switchF
optical receiverG
fiber-optic cable
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