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 answers True
A fiber optic power meter measures absolute power in dBM (dB referenced to 1 mw) and, when used with a light so...
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
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FOA CFOT Certification
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FOA CFOT Certification Exam v11 (100% correct 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 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? correct
answers True
When we say 62.5/125 fiber, what does "62.5" mean? correct answers core size, the diameter in
microns
When we say 50/125 fiber, what does "125" mean? correct 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 _____. correct 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. correct answers Higher
Which of the following represents a singlemode (smaller core size) fiber size? correct answers
9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. correct answers greater
Most plastic optical fibers are _____. correct answers large core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are removing the
____. correct 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. correct answers Strength members
According to the references, hybrid cables are cables that contain ____. correct 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? correct answers ribbon
According to the references, composite cables refer to cables that contain ____> correct answers
both optical fibers and copper conductors
Which optical fiber cables must be grounded? correct answers all cables that contain metallic
elements
, Fiber optic cable for use inside a building must _______. correct answers 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 answers Multimode fiber
Premises cable jackets are usually color-coded in what color to indicate singlemode fiber?
correct answers Yellow
Premises cable jackets are usually color-coded in what color to indicate laser-optimized 50/125
OM3 or OM4 fiber? correct answers Aqua
When pulling long lengths of cable in conduit or innerduct, you may need to ____. correct
answers 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 _____. correct answers
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? correct answers 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? correct answers loose tube (loose buffer) cable
When pulling cables, the minimum bend radius under tension is generally specified as ______.
correct answers 20 times the cable diameter
Cable ties used on fiber optic cables ____. correct answers Can harm cables if too tight, so they
should be hand-tightened.
Fiber optic joints (connectors or splices) should have ____. correct answers 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. correct answers Reflectance
Factory terminations, such as used for making patchcords, generally use what method of
attaching the connector? correct answers Epoxy/polish
According to the references, the connector in the following list with the best or lowest
reflectance would be the ____. correct answers SC-APC (Angled Polished Connector)
Splices are most often used for _____. correct answers A permanent joint between two fibers
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