ETA-I STUDY GUIDE (FIBER OPTICS INSTALLER
CERTIFICATION) (FOI) WITH ALL CORRECT & VERIFIED
ANSWERS (UPDATED TO PASS)
An optical fiber works based off of a principle known as; Correct 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? Correct answer-Refraction.
Light is electromagnetic radiation in the wavelength range including visible, ultraviolet, X-rays and
_______________. Correct answer-Infrared.
What are the three parts of a typical optical fiber? Correct answer-Core, Cladding, buffer Coating.
(3 C's)
A simple fiber optic system consists of what four components? Correct answer-Transmitter,
receiver, fiber, and connector.
Which optical fiber is most suited for very high speed and long distance applications? Correct
answer-Single-mode.
The reduction of power as a signal passes through a system is called (Also known as signal loss);
Correct answer-Attenuation.
A fiber optic cable which has single-mode and multi-mode optical fibers is what kind of cable?
Correct 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? Correct
answer-Multi-mode graded-index.
The spreading of light pulses as they take different paths in traveling down a fiber is known as what?
Correct answer-Modal Dispersion.
What are the two widely used methods for installing buried fiber optic cables? Correct answer-
Trench and Plow methods.
What configurations should be used when the center pull or backfeeding techniques are used to pull
in cables? Correct answer-Figure 8's.
During the installation of fiber optic cables, innerduct serves what two main purposes? Correct
answer-Expansion and Protection.
Two basic methods used for installing lashed aerial cables are; Correct 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; Correct answer-Tensile strength and bend radius.
What are the three main parts of a connector? Correct answer-Boot, body, ferrule.
CERTIFICATION) (FOI) WITH ALL CORRECT & VERIFIED
ANSWERS (UPDATED TO PASS)
An optical fiber works based off of a principle known as; Correct 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? Correct answer-Refraction.
Light is electromagnetic radiation in the wavelength range including visible, ultraviolet, X-rays and
_______________. Correct answer-Infrared.
What are the three parts of a typical optical fiber? Correct answer-Core, Cladding, buffer Coating.
(3 C's)
A simple fiber optic system consists of what four components? Correct answer-Transmitter,
receiver, fiber, and connector.
Which optical fiber is most suited for very high speed and long distance applications? Correct
answer-Single-mode.
The reduction of power as a signal passes through a system is called (Also known as signal loss);
Correct answer-Attenuation.
A fiber optic cable which has single-mode and multi-mode optical fibers is what kind of cable?
Correct 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? Correct
answer-Multi-mode graded-index.
The spreading of light pulses as they take different paths in traveling down a fiber is known as what?
Correct answer-Modal Dispersion.
What are the two widely used methods for installing buried fiber optic cables? Correct answer-
Trench and Plow methods.
What configurations should be used when the center pull or backfeeding techniques are used to pull
in cables? Correct answer-Figure 8's.
During the installation of fiber optic cables, innerduct serves what two main purposes? Correct
answer-Expansion and Protection.
Two basic methods used for installing lashed aerial cables are; Correct 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; Correct answer-Tensile strength and bend radius.
What are the three main parts of a connector? Correct answer-Boot, body, ferrule.
