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CERTIFIED FIBER OPTICS FINAL EXAM 2 VERSIONS
(VERSION A AND B) 2026 BANK MOST RECENT EXAM
2026 ACTUAL COMPLETE 500 REAL VERIFIED EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS
(CORRECT ANSWERS) ALREADY GRADED A+ /
NEWEST EXAM!!!
Before a fiber is installed it is often checked for ________?
- Answer-Continuity
What is the difference between a visible fault locator and a
visible fiber tracer? - Answer-The amount of optical power
coupled into the fiber
What instrument detects poor splices or cable breaks in
short lengths of fiber? - Answer-Visual Fault Locator (VFL)
What finds faults in fibers to close for the OTDR to see? -
Answer-Visual Fault Locator (VFL)
What detects scratches and polishing defects in
connectors? - Answer-Microscope
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Before viewing a connector with a microscope you should
_________? - Answer-Make sure there is no power
present
Where are scratches or defects on a connector end
considered a problem? - Answer-Anywhere on the core
What happens if you use a microscope with excessively
high magnification? - Answer-Small scratches/defects
appear larger or worse than they truly are.
When viewing a connector with a microscope which
method allows for the best inspection for scratches? -
Answer-At an angle with lighting at angle
What instrument detects a 2khz tone? - Answer-Fiber
Identifier
What is 0dBm? - Answer-1mw
What does the "m" in dBm represent? - Answer-Reference
to 1mw
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A loss of 20dB means power is less by how many times? -
Answer-100
A loss of 3dB means power is less by what percentage? -
Answer-50%
Of the following which has the highest power?
A. - 20dbm
B. - 30 dbm
C. 10 mw
D. 100 mw - Answer-100mw
What does not affect loss readings? - Answer-Meter
calibration wavelength
What is the most basic measurement parameter fiber and
is required for almost all fiber optic tests? - Answer-Optical
power
Why do power meters measure in dB? - Answer-Measures
loss directly
CERTIFIED FIBER OPTICS FINAL EXAM 2 VERSIONS
(VERSION A AND B) 2026 BANK MOST RECENT EXAM
2026 ACTUAL COMPLETE 500 REAL VERIFIED EXAM
QUESTIONS WITH DETAILED VERIFIED ANSWERS
(CORRECT ANSWERS) ALREADY GRADED A+ /
NEWEST EXAM!!!
Before a fiber is installed it is often checked for ________?
- Answer-Continuity
What is the difference between a visible fault locator and a
visible fiber tracer? - Answer-The amount of optical power
coupled into the fiber
What instrument detects poor splices or cable breaks in
short lengths of fiber? - Answer-Visual Fault Locator (VFL)
What finds faults in fibers to close for the OTDR to see? -
Answer-Visual Fault Locator (VFL)
What detects scratches and polishing defects in
connectors? - Answer-Microscope
,2|Page
Before viewing a connector with a microscope you should
_________? - Answer-Make sure there is no power
present
Where are scratches or defects on a connector end
considered a problem? - Answer-Anywhere on the core
What happens if you use a microscope with excessively
high magnification? - Answer-Small scratches/defects
appear larger or worse than they truly are.
When viewing a connector with a microscope which
method allows for the best inspection for scratches? -
Answer-At an angle with lighting at angle
What instrument detects a 2khz tone? - Answer-Fiber
Identifier
What is 0dBm? - Answer-1mw
What does the "m" in dBm represent? - Answer-Reference
to 1mw
, 3|Page
A loss of 20dB means power is less by how many times? -
Answer-100
A loss of 3dB means power is less by what percentage? -
Answer-50%
Of the following which has the highest power?
A. - 20dbm
B. - 30 dbm
C. 10 mw
D. 100 mw - Answer-100mw
What does not affect loss readings? - Answer-Meter
calibration wavelength
What is the most basic measurement parameter fiber and
is required for almost all fiber optic tests? - Answer-Optical
power
Why do power meters measure in dB? - Answer-Measures
loss directly
