FOA CFOT Certification Exam v11 Questions With Verified Answers
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insertion loss expressed in dB. True or False? -
answerTrue
When we say 62.5/125 fiber, what does "62.5" mean? - answercore size, the diameter in
microns
When we say 50/125 fiber, what does "125" mean? - answercladding size, the diameter in
microns
OM3 and OM4 multimode fiber with a 50/125 mi...
FOA CFOT Certification Exam v11
Questions With Verified 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? - 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
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
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
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