Fiber Optic Class CFOS/T Certification
EXAM QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025)
Before a fiber is installed it is often checked for ______. -
Correct Answers ✅continuity
What is the difference between a visual fault locator (VFL)
and a visual fiber tracer (VFT)? - Correct Answers ✅the
amount of optical power coupled into the fiber
What instrument detects poor splices or cable breaks in short
lengths of fiber? - Correct Answers ✅the visual fault
locator (VFL)
what finds faults in fiber's too close for the OTDR to see? -
Correct Answers ✅the visual fault locator (VFL)
What detects scratches and polishing defects in connectors? -
Correct Answers ✅Microscope
Before viewing a connector with a microscope you should
____________. - Correct Answers ✅make sure there is no
power present. (no light coming through)
Where are scratches or defects on a connector end
considered a problem? - Correct Answers ✅Anywhere on
the core
, Fiber Optic Class CFOS/T Certification
EXAM QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025)
What happens if you use a microscope with excessively high
magnification? - Correct Answers ✅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? - Correct
Answers ✅at an angle, with lighting at an angle
What instrument detects a 2 kHz tone? - Correct Answers
✅a fiber identifier
What is 0 dBm? - Correct Answers ✅1 mw (milliwatt)
What is the m in dBm represent? - Correct Answers
✅reference to milliwatt
a loss of 20 dB means power is less than by how many times?
- Correct Answers ✅100
a loss of 3 dB means power is less by what ________%? -
Correct Answers ✅50%
Of the following 4 which of these has the highest power?
EXAM QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025)
Before a fiber is installed it is often checked for ______. -
Correct Answers ✅continuity
What is the difference between a visual fault locator (VFL)
and a visual fiber tracer (VFT)? - Correct Answers ✅the
amount of optical power coupled into the fiber
What instrument detects poor splices or cable breaks in short
lengths of fiber? - Correct Answers ✅the visual fault
locator (VFL)
what finds faults in fiber's too close for the OTDR to see? -
Correct Answers ✅the visual fault locator (VFL)
What detects scratches and polishing defects in connectors? -
Correct Answers ✅Microscope
Before viewing a connector with a microscope you should
____________. - Correct Answers ✅make sure there is no
power present. (no light coming through)
Where are scratches or defects on a connector end
considered a problem? - Correct Answers ✅Anywhere on
the core
, Fiber Optic Class CFOS/T Certification
EXAM QUESTIONS AND ANSWERS 100%
SOLVED (Newest 2025)
What happens if you use a microscope with excessively high
magnification? - Correct Answers ✅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? - Correct
Answers ✅at an angle, with lighting at an angle
What instrument detects a 2 kHz tone? - Correct Answers
✅a fiber identifier
What is 0 dBm? - Correct Answers ✅1 mw (milliwatt)
What is the m in dBm represent? - Correct Answers
✅reference to milliwatt
a loss of 20 dB means power is less than by how many times?
- Correct Answers ✅100
a loss of 3 dB means power is less by what ________%? -
Correct Answers ✅50%
Of the following 4 which of these has the highest power?
