FOA CFOT Certification Exam v11 (100%
correct answers) 2026-2027
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
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? - 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? - 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
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
Fiber optic cable for use inside a building must _______. - 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 _____. -
ANSWER-Multimode fiber
Premises cable jackets are usually color-coded in what color to indicate singlemode fiber? -
ANSWER-Yellow
Premises cable jackets are usually color-coded in what color to indicate laser-optimized 50/125
OM3 or OM4 fiber? - ANSWER-Aqua
When pulling long lengths of cable in conduit or innerduct, you may need to ____. - 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)
In a loose tube cable, a gel or absorbent tape or powder is normally used _____. - ANSWER-To
prevent water from entering the cable
Which type of cable is best suited for indoor installation when fibers ar to be directly terminated
inside a patch panel with adhesive/polish or prepolished splice connectors? - ANSWER-tight
buffer distribution cable
What type of cable may require installation of a breakout kit (also called a furcation or fan out
kit) for termination? - ANSWER-loose tube (loose buffer) cable
When pulling cables, the minimum bend radius under tension is generally specified as ______. -
ANSWER-20 times the cable diameter
Cable ties used on fiber optic cables ____. - ANSWER-Can harm cables if too tight, so they
should be hand-tightened.
Fiber optic joints (connectors or splices) should have ____. - ANSWER-low loss, minimal
reflectance and high mechanical strength
To reduce _____ as well as loss, the end of a connector ferrule is polished to a PC (physical
contact) finish. - ANSWER-Reflectance
Factory terminations, such as used for making patchcords, generally use what method of
attaching the connector? - ANSWER-Epoxy/polish
correct answers) 2026-2027
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
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? - 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? - 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
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
Fiber optic cable for use inside a building must _______. - 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 _____. -
ANSWER-Multimode fiber
Premises cable jackets are usually color-coded in what color to indicate singlemode fiber? -
ANSWER-Yellow
Premises cable jackets are usually color-coded in what color to indicate laser-optimized 50/125
OM3 or OM4 fiber? - ANSWER-Aqua
When pulling long lengths of cable in conduit or innerduct, you may need to ____. - 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)
In a loose tube cable, a gel or absorbent tape or powder is normally used _____. - ANSWER-To
prevent water from entering the cable
Which type of cable is best suited for indoor installation when fibers ar to be directly terminated
inside a patch panel with adhesive/polish or prepolished splice connectors? - ANSWER-tight
buffer distribution cable
What type of cable may require installation of a breakout kit (also called a furcation or fan out
kit) for termination? - ANSWER-loose tube (loose buffer) cable
When pulling cables, the minimum bend radius under tension is generally specified as ______. -
ANSWER-20 times the cable diameter
Cable ties used on fiber optic cables ____. - ANSWER-Can harm cables if too tight, so they
should be hand-tightened.
Fiber optic joints (connectors or splices) should have ____. - ANSWER-low loss, minimal
reflectance and high mechanical strength
To reduce _____ as well as loss, the end of a connector ferrule is polished to a PC (physical
contact) finish. - ANSWER-Reflectance
Factory terminations, such as used for making patchcords, generally use what method of
attaching the connector? - ANSWER-Epoxy/polish
