ETA-I Study Guide (Fiber Optics Installer
Certification) (FOI)ACCURATE 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 must be established prior to measuring loss when using the light source and power meter? -
ANSWER A reference point or zero reference.
What are the three basic approaches to modal conditioning used to achieve or simulate EMD when
testing multimode fiber? - ANSWER Optical, long fiber, filtering approach.
The Fibrlok II mechanical splice will accommodate single-mode or multimode fibers that have what
diameter cladding? - ANSWER 125μm.
What is the insertion loss for the Fibrlok II mechanical splice? - ANSWER Less than .1 dB.
What is the safest and most efficient method of removing fiber buffer? - ANSWER Mechanical buffer
strippers.
The Fibrlok II mechanical splices are filled with what to maximize light transfer and reduce Fresnel
reflections? - ANSWER Index matching gel.
When applying a cable cleaner to remove water resistant compound, how should the technician work? -
ANSWER The jacket end toward the cable end.
Patch panels provide a central location for cross-connecting, monitoring, and _______________. -
ANSWER Testing.
When installing patch panels located in equipment rooms, how are they normally mounted? - ANSWER
Rack.
Certification) (FOI)ACCURATE 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 must be established prior to measuring loss when using the light source and power meter? -
ANSWER A reference point or zero reference.
What are the three basic approaches to modal conditioning used to achieve or simulate EMD when
testing multimode fiber? - ANSWER Optical, long fiber, filtering approach.
The Fibrlok II mechanical splice will accommodate single-mode or multimode fibers that have what
diameter cladding? - ANSWER 125μm.
What is the insertion loss for the Fibrlok II mechanical splice? - ANSWER Less than .1 dB.
What is the safest and most efficient method of removing fiber buffer? - ANSWER Mechanical buffer
strippers.
The Fibrlok II mechanical splices are filled with what to maximize light transfer and reduce Fresnel
reflections? - ANSWER Index matching gel.
When applying a cable cleaner to remove water resistant compound, how should the technician work? -
ANSWER The jacket end toward the cable end.
Patch panels provide a central location for cross-connecting, monitoring, and _______________. -
ANSWER Testing.
When installing patch panels located in equipment rooms, how are they normally mounted? - ANSWER
Rack.
