FOA CFOT CERTIFICATION EXAM V11 QUESTIONS AND 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? - CORRECT ANSWER✅✅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? - CORRECT
ANSWER✅✅True
When we say 62.5/125 fiber, what does "62.5" mean? - CORRECT ANSWER✅✅core size, the diameter
in microns
When we say 50/125 fiber, what does "125" mean? - CORRECT 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 _____. - CORRECT 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. - CORRECT ANSWER✅✅Higher
Which of the following represents a singlemode (smaller core size) fiber size? - CORRECT
ANSWER✅✅9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - CORRECT ANSWER✅✅greater
Most plastic optical fibers are _____. - CORRECT ANSWER✅✅large core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are removing the ____. -
CORRECT 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. - CORRECT ANSWER✅✅Strength members
According to the references, hybrid cables are cables that contain ____. - CORRECT 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? - CORRECT ANSWER✅✅ribbon
According to the references, composite cables refer to cables that contain ____> - CORRECT
ANSWER✅✅both optical fibers and copper conductors
Which optical fiber cables must be grounded? - CORRECT ANSWER✅✅all cables that contain metallic
elements
Fiber optic cable for use inside a building must _______. - CORRECT ANSWER✅✅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 _____. - CORRECT
ANSWER✅✅Multimode fiber
Premises cable jackets are usually color-coded in what color to indicate singlemode fiber? - CORRECT
ANSWER✅✅Yellow
Premises cable jackets are usually color-coded in what color to indicate laser-optimized 50/125 OM3 or
OM4 fiber? - CORRECT ANSWER✅✅Aqua
When pulling long lengths of cable in conduit or innerduct, you may need to ____. - CORRECT
ANSWER✅✅Any or all of these as appropriate (Pull form the center to the ends, Use a breakaway
swivel or monitor tension, Lubricate the cable)
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 ANSWER✅✅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? - CORRECT
ANSWER✅✅True
When we say 62.5/125 fiber, what does "62.5" mean? - CORRECT ANSWER✅✅core size, the diameter
in microns
When we say 50/125 fiber, what does "125" mean? - CORRECT 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 _____. - CORRECT 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. - CORRECT ANSWER✅✅Higher
Which of the following represents a singlemode (smaller core size) fiber size? - CORRECT
ANSWER✅✅9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - CORRECT ANSWER✅✅greater
Most plastic optical fibers are _____. - CORRECT ANSWER✅✅large core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are removing the ____. -
CORRECT 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. - CORRECT ANSWER✅✅Strength members
According to the references, hybrid cables are cables that contain ____. - CORRECT 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? - CORRECT ANSWER✅✅ribbon
According to the references, composite cables refer to cables that contain ____> - CORRECT
ANSWER✅✅both optical fibers and copper conductors
Which optical fiber cables must be grounded? - CORRECT ANSWER✅✅all cables that contain metallic
elements
Fiber optic cable for use inside a building must _______. - CORRECT ANSWER✅✅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 _____. - CORRECT
ANSWER✅✅Multimode fiber
Premises cable jackets are usually color-coded in what color to indicate singlemode fiber? - CORRECT
ANSWER✅✅Yellow
Premises cable jackets are usually color-coded in what color to indicate laser-optimized 50/125 OM3 or
OM4 fiber? - CORRECT ANSWER✅✅Aqua
When pulling long lengths of cable in conduit or innerduct, you may need to ____. - CORRECT
ANSWER✅✅Any or all of these as appropriate (Pull form the center to the ends, Use a breakaway
swivel or monitor tension, Lubricate the cable)
