FOA CFOT Certification Exam/2024
WITH 100% CORRECT- answers
Fault location, splice loss, length (Which Tool(s) do you use?) - CORRECT
ANSWEROTDR
Continuity, fiber tracing, fault location close to end of a cable (Which Tool(s) do you
use?) - CORRECT ANSWERVisual fault locator
Cable to test -...
FOA CFOT Certification Exam/2024
WITH 100% CORRECT- answers
Fault location, splice loss, length (Which Tool(s) do you use?) - CORRECT
ANSWEROTDR
Continuity, fiber tracing, fault location close to end of a cable (Which Tool(s) do you
use?) - CORRECT ANSWERVisual fault locator
Cable to test - CORRECT ANSWERCable in the middle wrapped multiple times in
circles
Connector mating adapter - CORRECT ANSWERDevice that connect two wires
together
Launch cable - CORRECT ANSWERCable connected to the light source
Light source - CORRECT ANSWERDevice at the end shining a light or laser
Power meter - CORRECT ANSWERDevice taking measurements and giving out
numbers
Receive cable - CORRECT ANSWERCable connected to the power meter
Connector, showing loss and back reflection - CORRECT ANSWERHigh spike (upside
down V) in the middle of the graph
Distance scale - CORRECT ANSWEROn the graph it will be X-axis (left to right) on the
bottom side
End of the fiber - CORRECT ANSWERZig-Zag lines at the end of the graph
Initial pulse and dead zone - CORRECT ANSWERHigh spike of energy (upside down
U) at the beginning of the graph
, Loss scale - CORRECT ANSWEROn the graph it will be the Y-axis (up and down) on
the left side
Splice loss - CORRECT ANSWERA drop of energy (like a step) in the middle of the
graph
Fiber Size - CORRECT ANSWERum (microns)
Wavelength - CORRECT ANSWERnm (nanometers)
Bandwidth - CORRECT ANSWERMHz or GHz (megahertz or gigahertz)
Loss - CORRECT ANSWERdB (decibels)
A fiber optic inspection microscope can increase the danger of high powered light
sources by focusing the light coming out of a fiber into your eye. True or False? -
CORRECT ANSWERTrue
A fiber optic power meter measures absolute power in dBM (dB referenced to 1 mw)
and, when used with a light source, can measure insertion loss expressed in dB. True
or False? - CORRECT ANSWERTrue
When we say 62.5/125 fiber, what does "62.5" mean? - CORRECT ANSWERcore size,
the diameter in microns
When we say 50/125 fiber, what does "125" mean? - CORRECT ANSWERcladding
size, the diameter in microns
OM3 and OM4 multimode fiber with a 50/125 micron core are now a popular option in
premises cabling systems because they _____. - CORRECT ANSWERAre "laser
optimized" which gives more distance capability with gigabit networks using laser
sources
In-multimode fiber, the attenuation (reduction in optical power) of the fiber is _____ at
850 nm than at 1300 nm. - CORRECT ANSWERHigher
Which of the following represents a singlemode (smaller core size) fiber size? -
CORRECT ANSWER9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - CORRECT
ANSWERgreater
Most plastic optical fibers are _____. - CORRECT ANSWERlarge core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are
removing the ____. - CORRECT ANSWERPrimary buffer coating
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