FIBER OPTIC CLASS CFOS/T CERTIFICATION QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW

FIBER OPTIC CLASS CFOS/T CERTIFICATION QUESTIONS
AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||BRAND NEW
Before a fiber is installed it is often checked for ______.
Ans✓✓✓continuity


What is the difference between a visual fault locator (VFL) and a visual
fiber tracer (VFT)? Ans✓✓✓the amount of optical power coupled into
the fiber


What instrument detects poor splices or cable breaks in short lengths of
fiber? Ans✓✓✓the visual fault locator (VFL)


what finds faults in fiber's too close for the OTDR to see? Ans✓✓✓the
visual fault locator (VFL)


What detects scratches and polishing defects in connectors?
Ans✓✓✓Microscope


Before viewing a connector with a microscope you should
____________. Ans✓✓✓make sure there is no power present. (no light
coming through)


Where are scratches or defects on a connector end considered a
problem? Ans✓✓✓Anywhere on the core

, What happens if you use a microscope with excessively high
magnification? Ans✓✓✓Small scratches and defects appear worse than
they truly are


When viewing a connector with a microscope, which method allows for
the best inspection for scratches? Ans✓✓✓at an angle, with lighting at
an angle


What instrument detects a 2 kHz tone? Ans✓✓✓a fiber identifier


What is 0 dBm? Ans✓✓✓1 mw (milliwatt)


What is the m in dBm represent? Ans✓✓✓reference to milliwatt


a loss of 20 dB means power is less than by how many times?
Ans✓✓✓100


a loss of 3 dB means power is less by what ________%? Ans✓✓✓50%


Of the following 4 which of these has the highest power?
-20 dBm, -30 dBm,10mw, or 100mw Ans✓✓✓100 mw