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FOA CFOT Certification Exam v11
Questions and Correct Answers
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? Ans: — True
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? Ans: —
True
When we say 62.5/125 fiber, what does "62.5" mean? Ans: — core
size, the diameter in microns
When we say 50/125 fiber, what does "125" mean? Ans: —
cladding 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 _____.
Ans: — Are "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. Ans: — Higher
Which of the following represents a singlemode (smaller core size)
fiber size? Ans: — 9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. Ans:
— greater
Most plastic optical fibers are _____. Ans: — large core step-index
When you strip singlemode or graded index multimode mode glass
fiber, you are removing the ____. Ans: — Primary buffer coating
© 2025 All rights reserved
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The proper method of pulling optical fiber cables is to attach the
pull wire or tape to the ____ of the cable. Ans: — Strength
members
According to the references, hybrid cables are cables that contain
____. Ans: — Both singelmode and multimode optical fibers
What type of fiber cable design allows for large numbers of fibers
with ultra-high density, small size (diameter) and lower cost? Ans:
— ribbon
According to the references, composite cables refer to cables that
contain ____> Ans: — both optical fibers and copper conductors
Which optical fiber cables must be grounded? Ans: — all cables
that contain metallic elements
Fiber optic cable for use inside a building must _______. Ans: — Be
rated to meet the requirements of local building and fire codes
Optical fiber cable with a orange colored jacket generally indicates
the cable contains _____. Ans: — Multimode fiber
Premises cable jackets are usually color-coded in what color to
indicate singlemode fiber? Ans: — Yellow
Premises cable jackets are usually color-coded in what color to
indicate laser-optimized 50/125 OM3 or OM4 fiber? Ans: — Aqua
When pulling long lengths of cable in conduit or innerduct, you
may need to ____. Ans: — Any or all of these as appropriate (Pull
form the center to the ends, Use a breakaway swivel or monitor
tension, Lubricate the cable)
In a loose tube cable, a gel or absorbent tape or powder is
normally used _____. Ans: — To prevent water from entering the
cable
© 2025 All rights reserved
FOA CFOT Certification Exam v11
Questions and Correct Answers
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? Ans: — True
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? Ans: —
True
When we say 62.5/125 fiber, what does "62.5" mean? Ans: — core
size, the diameter in microns
When we say 50/125 fiber, what does "125" mean? Ans: —
cladding 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 _____.
Ans: — Are "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. Ans: — Higher
Which of the following represents a singlemode (smaller core size)
fiber size? Ans: — 9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. Ans:
— greater
Most plastic optical fibers are _____. Ans: — large core step-index
When you strip singlemode or graded index multimode mode glass
fiber, you are removing the ____. Ans: — Primary buffer coating
© 2025 All rights reserved
, 2 | Page
The proper method of pulling optical fiber cables is to attach the
pull wire or tape to the ____ of the cable. Ans: — Strength
members
According to the references, hybrid cables are cables that contain
____. Ans: — Both singelmode and multimode optical fibers
What type of fiber cable design allows for large numbers of fibers
with ultra-high density, small size (diameter) and lower cost? Ans:
— ribbon
According to the references, composite cables refer to cables that
contain ____> Ans: — both optical fibers and copper conductors
Which optical fiber cables must be grounded? Ans: — all cables
that contain metallic elements
Fiber optic cable for use inside a building must _______. Ans: — Be
rated to meet the requirements of local building and fire codes
Optical fiber cable with a orange colored jacket generally indicates
the cable contains _____. Ans: — Multimode fiber
Premises cable jackets are usually color-coded in what color to
indicate singlemode fiber? Ans: — Yellow
Premises cable jackets are usually color-coded in what color to
indicate laser-optimized 50/125 OM3 or OM4 fiber? Ans: — Aqua
When pulling long lengths of cable in conduit or innerduct, you
may need to ____. Ans: — Any or all of these as appropriate (Pull
form the center to the ends, Use a breakaway swivel or monitor
tension, Lubricate the cable)
In a loose tube cable, a gel or absorbent tape or powder is
normally used _____. Ans: — To prevent water from entering the
cable
© 2025 All rights reserved
