FOA CFOT Certification Exam v11
Questions with 100% 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? - ✔✔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? - ✔✔True
When we say 62.5/125 fiber, what does "62.5" mean? - ✔✔core size, the
diameter in microns
When we say 50/125 fiber, what does "125" mean? - ✔✔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 _____. - ✔✔Are
"laser optimized" which gives more distance capability with gigabit
networks using laser sources
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, In-multimode fiber, the attenuation (reduction in optical power) of the fiber
is _____ at 850 nm than at 1300 nm. - ✔✔Higher
Which of the following represents a singlemode (smaller core size) fiber
size? - ✔✔9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - ✔✔greater
Most plastic optical fibers are _____. - ✔✔large core step-index
When you strip singlemode or graded index multimode mode glass fiber,
you are removing the ____. - ✔✔Primary buffer coating
The proper method of pulling optical fiber cables is to attach the pull wire or
tape to the ____ of the cable. - ✔✔Strength members
According to the references, hybrid cables are cables that contain ____. -
✔✔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? - ✔✔ribbon
According to the references, composite cables refer to cables that contain
____> - ✔✔both optical fibers and copper conductors
Which optical fiber cables must be grounded? - ✔✔all cables that contain
metallic elements
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Questions with 100% 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? - ✔✔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? - ✔✔True
When we say 62.5/125 fiber, what does "62.5" mean? - ✔✔core size, the
diameter in microns
When we say 50/125 fiber, what does "125" mean? - ✔✔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 _____. - ✔✔Are
"laser optimized" which gives more distance capability with gigabit
networks using laser sources
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, In-multimode fiber, the attenuation (reduction in optical power) of the fiber
is _____ at 850 nm than at 1300 nm. - ✔✔Higher
Which of the following represents a singlemode (smaller core size) fiber
size? - ✔✔9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - ✔✔greater
Most plastic optical fibers are _____. - ✔✔large core step-index
When you strip singlemode or graded index multimode mode glass fiber,
you are removing the ____. - ✔✔Primary buffer coating
The proper method of pulling optical fiber cables is to attach the pull wire or
tape to the ____ of the cable. - ✔✔Strength members
According to the references, hybrid cables are cables that contain ____. -
✔✔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? - ✔✔ribbon
According to the references, composite cables refer to cables that contain
____> - ✔✔both optical fibers and copper conductors
Which optical fiber cables must be grounded? - ✔✔all cables that contain
metallic elements
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
