ETA-I Study Guide (Fiber Optics Installer Certification) (FOI)Correct 100%
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Course
FOA CFOT
Institution
FOA CFOT
An optical fiber works based off of a principle known as; - ANSWER Total Internal Reflection.
The bending of light as it passes from one transparent material into another which has a different refractive index is what? - ANSWER Refraction.
Light is electromagnetic radiation in the wavelength ...
ETA-I Study Guide (Fiber Optics Installer
Certification) (FOI)Correct 100%
An optical fiber works based off of a principle known as; - ANSWER Total Internal Reflection.
The bending of light as it passes from one transparent material into another which has a different
refractive index is what? - ANSWER Refraction.
Light is electromagnetic radiation in the wavelength range including visible, ultraviolet, X-rays and
_______________. - ANSWER Infrared.
What are the three parts of a typical optical fiber? - ANSWER Core, Cladding, buffer Coating. (3 C's)
A simple fiber optic system consists of what four components? - ANSWER Transmitter, receiver, fiber, and
connector.
Which optical fiber is most suited for very high speed and long distance applications? - ANSWER Single-
mode.
The reduction of power as a signal passes through a system is called (Also known as signal loss); -
ANSWER Attenuation.
A fiber optic cable which has single-mode and multi-mode optical fibers is what kind of cable? - ANSWER
Hybrid.
A fiber with it's core having numerous concentric layers of glass, with each layer having a lower index of
refraction is what kind of fiber? What is the core size and how is it identified now? - ANSWER Multi-
mode graded-index.
, The spreading of light pulses as they take different paths in traveling down a fiber is known as what? -
ANSWER Modal Dispersion.
What are the two widely used methods for installing buried fiber optic cables? - ANSWER Trench and
Plow methods.
What configurations should be used when the center pull or backfeeding techniques are used to pull in
cables? - ANSWER Figure 8's.
During the installation of fiber optic cables, innerduct serves what two main purposes? - ANSWER
Expansion and Protection.
Two basic methods used for installing lashed aerial cables are; - ANSWER Stationary reel (pull-in) and
moving reel (drive-off).
Two manufacturer's ratings or specifications that installers must always obey during fiber optic cable
installations are; - ANSWER Tensile strength and bend radius.
What are the three main parts of a connector? - ANSWER Boot, body, ferrule.
According to the TIA/EIA 568 standards, what is the maximum insertion loss allowed for a mated pair of
connectors? - ANSWER .75 dB.
The connector ferrule can be made of what three materials? - ANSWER Ceramic, plastic, steel.
What is the most common type of cleaver used during connector installation? - ANSWER Hand held.
Which connector comes pre-loaded with epoxy? - ANSWER Hot melt.
Why are LED sources the most common type used for testing purposes? - ANSWER Long life and low
cost.
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