FOA CFOT Certification Exam v11 Questions &
Answers 100% Correct!!
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? - ANSWERTrue
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? - 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 micron core are now a popular option in premises cabling
systems because they _____. - ANSWERAre "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. - ANSWERHigher
Which of the following represents a singlemode (smaller core size) fiber size? - ANSWER9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - ANSWERgreater
Most plastic optical fibers are _____. - ANSWERlarge core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are removing the ____. -
ANSWERPrimary buffer coating
, The proper method of pulling optical fiber cables is to attach the pull wire or tape to the ____ of the
cable. - ANSWERStrength members
According to the references, hybrid cables are cables that contain ____. - ANSWERBoth singelmode and
multimode optical fibers
When pulling cables, the minimum bend radius under tension is generally specified as ______. -
ANSWER20 times the cable diameter
Cable ties used on fiber optic cables ____. - ANSWERCan harm cables if too tight, so they should be
hand-tightened.
Fiber optic joints (connectors or splices) should have ____. - ANSWERlow 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. - ANSWERReflectance
Factory terminations, such as used for making patchcords, generally use what method of attaching the
connector? - ANSWEREpoxy/polish
According to the references, the connector in the following list with the best or lowest reflectance would
be the ____. - ANSWERSC-APC (Angled Polished Connector)
Splices are most often used for _____. - ANSWERA permanent joint between two fibers
If you need to permanently join two fibers together with the lowest loss and least amount of reflectance,
which of the following should you choose? - ANSWERfusion splice
Mass fusion splicing is normally used on what style of cable? - ANSWERribbon cable
Answers 100% Correct!!
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? - ANSWERTrue
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? - 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 micron core are now a popular option in premises cabling
systems because they _____. - ANSWERAre "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. - ANSWERHigher
Which of the following represents a singlemode (smaller core size) fiber size? - ANSWER9/125 micron
Singlemode fiber has _____ bandwidth than multimode fiber. - ANSWERgreater
Most plastic optical fibers are _____. - ANSWERlarge core step-index
When you strip singlemode or graded index multimode mode glass fiber, you are removing the ____. -
ANSWERPrimary buffer coating
, The proper method of pulling optical fiber cables is to attach the pull wire or tape to the ____ of the
cable. - ANSWERStrength members
According to the references, hybrid cables are cables that contain ____. - ANSWERBoth singelmode and
multimode optical fibers
When pulling cables, the minimum bend radius under tension is generally specified as ______. -
ANSWER20 times the cable diameter
Cable ties used on fiber optic cables ____. - ANSWERCan harm cables if too tight, so they should be
hand-tightened.
Fiber optic joints (connectors or splices) should have ____. - ANSWERlow 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. - ANSWERReflectance
Factory terminations, such as used for making patchcords, generally use what method of attaching the
connector? - ANSWEREpoxy/polish
According to the references, the connector in the following list with the best or lowest reflectance would
be the ____. - ANSWERSC-APC (Angled Polished Connector)
Splices are most often used for _____. - ANSWERA permanent joint between two fibers
If you need to permanently join two fibers together with the lowest loss and least amount of reflectance,
which of the following should you choose? - ANSWERfusion splice
Mass fusion splicing is normally used on what style of cable? - ANSWERribbon cable
