FOA CFOT Certification Exam v11
Questions With Complete 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? -
Answers: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? - Answers:True
When we say 62.5/125 fiber, what does "62.5" mean? - Answers:core size, the diameter
in microns
When we say 50/125 fiber, what does "125" mean? - Answers: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 _____. - Answers: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. - Answers:Higher
Which of the following represents a singlemode (smaller core size) fiber size? -
Answers:9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - Answers:greater
Most plastic optical fibers are _____. - Answers:large core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are
removing the ____. - Answers:Primary buffer coating
The proper method of pulling optical fiber cables is to attach the pull wire or tape to the
____ of the cable. - Answers:Strength members
According to the references, hybrid cables are cables that contain ____. - Answers: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? - Answers:ribbon
According to the references, composite cables refer to cables that contain ____> -
Answers:both optical fibers and copper conductors
Which optical fiber cables must be grounded? - Answers:all cables that contain metallic
elements
Questions With Complete 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? -
Answers: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? - Answers:True
When we say 62.5/125 fiber, what does "62.5" mean? - Answers:core size, the diameter
in microns
When we say 50/125 fiber, what does "125" mean? - Answers: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 _____. - Answers: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. - Answers:Higher
Which of the following represents a singlemode (smaller core size) fiber size? -
Answers:9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - Answers:greater
Most plastic optical fibers are _____. - Answers:large core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are
removing the ____. - Answers:Primary buffer coating
The proper method of pulling optical fiber cables is to attach the pull wire or tape to the
____ of the cable. - Answers:Strength members
According to the references, hybrid cables are cables that contain ____. - Answers: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? - Answers:ribbon
According to the references, composite cables refer to cables that contain ____> -
Answers:both optical fibers and copper conductors
Which optical fiber cables must be grounded? - Answers:all cables that contain metallic
elements
