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Exam (elaborations)

ETA Fiber Optics Certification Questions with Correct Answers 2025

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ETA Fiber Optics Certification Questions with Correct Answers 2025

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Certified Fiber Optic Technician
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Institution
Certified Fiber Optic Technician
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Certified Fiber Optic Technician

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Uploaded on
May 12, 2025
Number of pages
10
Written in
2024/2025
Type
Exam (elaborations)
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  • eta fiber optics certification questions with corr

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ETA Fiber Optics Certification Questions
with Correct Answers 2025
LightRisRelectromagneticRenergyRwithRaR_________RfrequencyRandRaR________RwavelengthRcompa
redRtoRradioRwaves.R-RCORRECTRANSWERR-Higher,RShorter



WhatRtypeRofRlightRisRusedRinRFiberROpticRTransmissionsR-RCORRECTRANSWERR-InfraredRorRIR



WhatRareRtheRfourRitemsRneededRforRaRFiberROpticRSystemRtoRwork?R-RCORRECTRANSWERR-
Transmitter,RFiberRCable,RReceiver,RConnectors



1mWRisRtheRsameRasRwhatRinRdBM?R-RCORRECTRANSWERR-0RorRabsoluteRpower



HowRisRpowerRmeasuredRinRfiber?R-RCORRECTRANSWERR-mWRorRdBM



PropagationR-RCORRECTRANSWERR-
lightRisRreflectedRoffRaRbodyRandRisRreturnRtoRitsRoriginalRemissionRpoint,RtheRlawRofRpropagationRfor
RtheRreturnRtripRisRtheRoriginalRtrip.




wavelengthR-RCORRECTRANSWERR-
HorizontalRdistanceRbetweenRtheRcrestsRorRbetweenRtheRtroughsRofRtwoRadjacentRwaves



FrequencyR-RCORRECTRANSWERR-
theRnumberRofRcompleteRwavelengthsRthatRpassRaRpointRinRaRgivenRtime



WhatRfiberRopticRwavelengthRhasRtheRlowestRloss?R-RCORRECTRANSWERR-1550Rum



WhatRwavelengthRwindowsRareRusedRforRmostRcommunications?R-RCORRECTRANSWERR-
850,R1330,R1550

, WhatRyearRwasRtheRfirstRfiberRopticRcableRusedRinRtheRcommunicationRtelephoneRsystem?R-
RCORRECTRANSWERR-1977




WhatRlightRsourceRisRusedRforRsingleRmode?R-RCORRECTRANSWERR-LaserRDiodeRLD



WhatRtwoRlightRsourcesRareRusedRwithRmultimode?R-RCORRECTRANSWERR-
LightREmittingRDiodeR(LED)

VerticalRCavityRSurfaceREmittingRLaserR(VCSEL)



AllRwavelengthsRofRlightRtravelRatRtheRsameRspeed.RTrueRorRFalseR-RCORRECTRANSWERR-False



WhichRtypeRofRfiberRhasRtheRlargestRcoreRsize?R-RCORRECTRANSWERR-Multi-mode



WhatRisROSHARresponsibleRfor?R-RCORRECTRANSWERR-
theRidentificationRofRvariousRhazardsRpresentRinRtheRworkplaceRandRforRtheRcreationRofRrulesRandRr
egulationsRtoRminimizeRexposureRtoRsuchRhazards



WhatRareRtwoRwaysRtoRreduceRmodalRdispersion?R-RCORRECTRANSWERR-
SmallerRCoreRandRuseRgradedRindexRfiber



WhatRhappensRtoRtheRwavelengthRinRopticalRfiberRwhenRtheRnumberRofRmodesRincreases?R-
RCORRECTRANSWERR-GetsRshorter



decreases



WhenRdoesRFresnelRreflectionRoccurR-RCORRECTRANSWERR-
ARsmallRportionRofRtheRincidentRlightRisRreflectedRbackRintoRtheRsourceRfiberRatRtheRfiberRinterface.
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