Fiber optics CORRECT QUESTIONS &
ANSWERS(RATED A)
True - ANSWER A fiber optic inspection microscope can increase the danger of high powered light
sources by focusing the light out of a fiber into your eye.
True - ANSWER The fiber optic power meter measures absolute power in dBm (dB referenced to 1 mw)
and, when used with a light source, measures insertion loss in dB.
Total internal reflection - ANSWER Confining light in a material by surrounding it by another material
with lower refractive index is the phenomenon of?
Scattering - ANSWER The largest cause of attenuation in an optical fiber is?
Core size, the diameter in microns - ANSWER When we say 62.5/125 fiber, what does "62.5" mean?
Cladding size, the diameter in microns - ANSWER When we say 50/125 fiber, what does "125" mean?
Has a higher bandwidth which gives more distance capability with gigabit networks - ANSWER An older
multimode fiber design with a 50/125 micron core is now an option in premises cabling systems because
it.
Higher - ANSWER In multimode fiber, the attenuation is ______ at 850 nm than at 1300 nm.
9/125 micron - ANSWER Which of the following represents a singlemode fiber size?
Greater - ANSWER Singlemode fiber has ______ bandwidth than multimode fiber.
, Chromatic dispersion - ANSWER What form of dispersion affects bandwidth in both multimode and
singlemode fibers.
Large core step-index - ANSWER Most plastic optical fibers are ______.
Yellow - ANSWER Premises cable jackets are usually color-coded in what color to indicate singlemode
fiber?
20 times the cable diameter - ANSWER The minimum bend radius for a cable while pulling (under
tension during installation) is ______.
Use a breakaway swivel or monitor tension
Lubricate the cable
Pull from the center to the ends - ANSWER When pulling long lengths of cable in conduit or innerduct,
you may need to ______.
To prevent water from entering the cable - ANSWER In a loose tube buffer cable, gel or absorbent tape is
normally used ______.
Tight buffer - ANSWER When flexibility and ease of termination are a priority, the type of cable best
suited is:
Loose tube (loose buffer) cable - ANSWER What type of cable may require installation of a breakout kit
(also called a furcation or fan out kit) for termination?
Can harm cables if too tight, so they should be hand-tightened - ANSWER Cable ties used on fiber optic
cables ______.
High mechanical strength and low loss - ANSWER Fiber optic joints (connectors or splices) should have
______.
ANSWERS(RATED A)
True - ANSWER A fiber optic inspection microscope can increase the danger of high powered light
sources by focusing the light out of a fiber into your eye.
True - ANSWER The fiber optic power meter measures absolute power in dBm (dB referenced to 1 mw)
and, when used with a light source, measures insertion loss in dB.
Total internal reflection - ANSWER Confining light in a material by surrounding it by another material
with lower refractive index is the phenomenon of?
Scattering - ANSWER The largest cause of attenuation in an optical fiber is?
Core size, the diameter in microns - ANSWER When we say 62.5/125 fiber, what does "62.5" mean?
Cladding size, the diameter in microns - ANSWER When we say 50/125 fiber, what does "125" mean?
Has a higher bandwidth which gives more distance capability with gigabit networks - ANSWER An older
multimode fiber design with a 50/125 micron core is now an option in premises cabling systems because
it.
Higher - ANSWER In multimode fiber, the attenuation is ______ at 850 nm than at 1300 nm.
9/125 micron - ANSWER Which of the following represents a singlemode fiber size?
Greater - ANSWER Singlemode fiber has ______ bandwidth than multimode fiber.
, Chromatic dispersion - ANSWER What form of dispersion affects bandwidth in both multimode and
singlemode fibers.
Large core step-index - ANSWER Most plastic optical fibers are ______.
Yellow - ANSWER Premises cable jackets are usually color-coded in what color to indicate singlemode
fiber?
20 times the cable diameter - ANSWER The minimum bend radius for a cable while pulling (under
tension during installation) is ______.
Use a breakaway swivel or monitor tension
Lubricate the cable
Pull from the center to the ends - ANSWER When pulling long lengths of cable in conduit or innerduct,
you may need to ______.
To prevent water from entering the cable - ANSWER In a loose tube buffer cable, gel or absorbent tape is
normally used ______.
Tight buffer - ANSWER When flexibility and ease of termination are a priority, the type of cable best
suited is:
Loose tube (loose buffer) cable - ANSWER What type of cable may require installation of a breakout kit
(also called a furcation or fan out kit) for termination?
Can harm cables if too tight, so they should be hand-tightened - ANSWER Cable ties used on fiber optic
cables ______.
High mechanical strength and low loss - ANSWER Fiber optic joints (connectors or splices) should have
______.
