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CFOS-T Exam Questions and Answers
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CFOS-T Exam Questions and Answers
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CFOS/T Exam Questions and AnswersWhich connectors are acceptable in a fiber optic plant - Answer- FOCIS
What does OLTS stand for? - Answer- Optical loss test set
Fiber optic cable is sometimes tested for what before its installed? - Answer- Continuity
Difference between visual fault locator and tracer? - Answer- Amount of optical power put into the fiber
What can find breaks in fibers too close to be seen by an OTDR? - Answer- Visual Fault
Locator
Best way to examine a connector? - Answer- At an angle
What is done before inspecting a connector with a microscope? - Answer- Ensure no power is present
What would happen if you inspected a connector with excessively high magnification? - Answer- Small scratches look worse than they actually are
Where are scratches or defects a problem? - Answer- Anywhere on the core
What is the most basic measurement in fiber optics? - Answer- Optical Power
Loss of 20dB is what reduction in power? - Answer- 100x reduction in power
Loss of 3dB is what reduction in power? - Answer- 50% reduction in power
Formula for Attenuation? - Answer- 10, 2, 1
0dBm is equal to? - Answer- 1 milliwatt
What does the 'm' in dBm represent? - Answer- milliwatt
Which of the following will not affect loss? - Answer- Meter Calibration Wavelength
Why do fiber optic power meters measure loss in dB? - Answer- Measures loss directly
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