FOA CFOT CERTIFICATION EXAM V11
COMPREHENSIVE STUDY GUIDE
◉ 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? Answer: True
◉ When we say 62.5/125 fiber, what does "62.5" mean? Answer:
core size, the diameter in microns
◉ When we say 50/125 fiber, what does "125" mean? Answer:
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
_____. Answer: 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. Answer: Higher
◉ Which of the following represents a singlemode (smaller core
size) fiber size? Answer: 9/125 micron
, ◉ Singlemode fiber has _____ bandwidth than multimode fiber.
Answer: greater
◉ Most plastic optical fibers are _____. Answer: large core step-index
◉ When you strip singlemode or graded index multimode mode
glass fiber, you are removing the ____. Answer: Primary buffer
coating
◉ The proper method of pulling optical fiber cables is to attach the
pull wire or tape to the ____ of the cable. Answer: Strength members
◉ According to the references, hybrid cables are cables that contain
____. Answer: 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?
Answer: ribbon
◉ According to the references, composite cables refer to cables that
contain ____> Answer: both optical fibers and copper conductors
◉ Which optical fiber cables must be grounded? Answer: all cables
that contain metallic elements
COMPREHENSIVE STUDY GUIDE
◉ 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? Answer: True
◉ When we say 62.5/125 fiber, what does "62.5" mean? Answer:
core size, the diameter in microns
◉ When we say 50/125 fiber, what does "125" mean? Answer:
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
_____. Answer: 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. Answer: Higher
◉ Which of the following represents a singlemode (smaller core
size) fiber size? Answer: 9/125 micron
, ◉ Singlemode fiber has _____ bandwidth than multimode fiber.
Answer: greater
◉ Most plastic optical fibers are _____. Answer: large core step-index
◉ When you strip singlemode or graded index multimode mode
glass fiber, you are removing the ____. Answer: Primary buffer
coating
◉ The proper method of pulling optical fiber cables is to attach the
pull wire or tape to the ____ of the cable. Answer: Strength members
◉ According to the references, hybrid cables are cables that contain
____. Answer: 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?
Answer: ribbon
◉ According to the references, composite cables refer to cables that
contain ____> Answer: both optical fibers and copper conductors
◉ Which optical fiber cables must be grounded? Answer: all cables
that contain metallic elements
