Which device creates an OEO conversion？ （）A、 amplifierB、 attenuatorC、 regeneratorD、 light emitterE、 optical switchF、 optical receiverG、 fiber-optic cable
Which device creates an OEO conversion？ （）
- A、 amplifier
- B、 attenuator
- C、 regenerator
- D、 light emitter
- E、 optical switch
- F、 optical receiver
- G、 fiber-optic cable
相关考题：
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.
After installing a new optical drive into a workstation, which of the following will ask for anacknowledgement?() A. IRQ ManagerB. BIOSC. Device ManagerD. Hardware Compatibility List
Which of the following is a pointing device offered in laptops?() A. Light penB. MouseC. Optical mouseD. Touch pad
Which of the following storage devices is not an example of an optical storage device?() A. Blu-RayB. DVDC. SSDD. CD
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
Which device creates an OEO conversion?() A. amplifierB. attenuatorC. regeneratorD. light emitterE. optical switchF. optical receiverG. fiber-optic cable
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
WhichdevicecreatesanOEOconversion?() A.amplifierB.attenuatorC.regeneratorD.lightemitterE.opticalswitchF.opticalreceiverG.fiber-opticcable
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 three in combination are factors that can cause four-wave mixing in fiber-optic cables？（）A、 low optical poweB、 high optical powerC、 few optical channelsD、 many optical channelsE、 low chromatic dispersionF、 high chromatic dispersionG、 too much power differential in the optical channels
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 .
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
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
A user reports that after configuring the BIOS to boot to the hard drive first, the system still tries to boot from the optical drive. Which of the following is the MOST likely cause?（）A、Optical driveB、Power supplyC、CMOS batteryD、CD-ROM disk
Which of the following storage devices is not an example of an optical storage device?（）A、Blu-RayB、DVDC、SSDD、CD
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?”
A second optical drive has been added to the computer and needs to be referenced as the R: drive by the Microsoft Windows operating system. Which of the following places in Microsoft Windows will BEST accomplish this task?（）A、Administrative ToolsB、Disk ManagementC、Device ManagerD、Event Viewer
OWM的英文全称是（）A、Optical Wavelength MultiplexB、Optical wavelength MonitorC、Optical wavelength MemoryD、All are right
Which device is used in wireless networks to send transmissions to a target area?（）A、Optical fiberB、Access pointC、Omni-directional antennaD、Directional antenna
Which of the following is a pointing device offered in laptops?（）A、Light penB、MouseC、Optical mouseD、Touch pad
After installing a new optical drive into a workstation, which of the following will ask for anacknowledgement?（）A、IRQ ManagerB、BIOSC、Device ManagerD、Hardware Compatibility List
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?”
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
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.
单选题Which device creates an OEO conversion？ （）A amplifierB attenuatorC regeneratorD light emitterE optical switchF optical receiverG fiber-optic cable
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
单选题Which device creates an OEO conversion?（）AamplifierBattenuatorCregeneratorDlight emitterEoptical switchFoptical receiverGfiber-optic cable