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Fiber Install & Activation Conventional
Questions and Correct Answers/ Latest
Update / Already Graded
Which of the following is true about fiber-optic cable? Choose all
that apply.
Ans: Because the optical fiber is made of dielectric material, the cable
does not carry electrical current, radiate energy, or produce heat or
sparks.
A 3/4-inch round fiber-optic cable can be manufactured with up to 864
optical fibers, which weigh approximately 130 pounds per kilometer.
Fiber-optic cable is affected less by moisture and thermal conditions than
is copper.
(2 attempts remaining)
Submit
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What is the wavelength of a 150 MHz carrier wave? Use the speed of
light measured in meters per second to finish this equation: 300 x 106
divided by 150 x 106.
Ans: 2 meters.
The encoder portion of the ( data encoder/modulator) codes
analog signals for conversion into digitial signals and the modulator
portion transforms the digital signal into the appropriate modulation
format.
Ans: data encoder/modulator
during the process of converting an electrical signal to an optical
signal, the (electrical interface) provides one or a combination of
any electrical protocols to the data encoder/modulator
Ans: electrical interface
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the modulation signal is applied to the (light source) which could be
either a light emitting diode or laser diode.
Ans: light source
What characteristic of fiber-optic cable enhances the security of
signals being transported in the network?
Ans: There is no EMI or RFI radiation, or other detectable energy,
radiating from the cable, so the transport of signal through fiber-optic
cable is very secure.
An optical fiber consists of what three parts?
Ans: An optical fiber is made up of three parts: (1) the core, which
transports the majority of the optical signal; (2) the cladding, which
surrounds the core; and (3) the protective coating around the cladding.
Chromatic dispersion occurs because each wavelength travels
through an optical fiber at slightly different velocities, and signals
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using those wavelengths will arrive at the receive point at different
times.
Ans: Fabry-Perot (F-P)
One of the drawbacks of this laser is the emission of a number of
discrete wavelengths or side modes.
Ans: Fabry-Perot (F-P)
These lasers are mainly sensitive to temperature variations and
require greater thermal control, which is provided by additional
circuitry.
Ans: Distributed feedback (DFB)
current changes that occur during (direct modulation) causes a
slight change on the instantaneous wavelength of the generated
light from the optical source, called chirp, which is a major limitation.
Fiber Install & Activation Conventional
Questions and Correct Answers/ Latest
Update / Already Graded
Which of the following is true about fiber-optic cable? Choose all
that apply.
Ans: Because the optical fiber is made of dielectric material, the cable
does not carry electrical current, radiate energy, or produce heat or
sparks.
A 3/4-inch round fiber-optic cable can be manufactured with up to 864
optical fibers, which weigh approximately 130 pounds per kilometer.
Fiber-optic cable is affected less by moisture and thermal conditions than
is copper.
(2 attempts remaining)
Submit
,2 | Page
What is the wavelength of a 150 MHz carrier wave? Use the speed of
light measured in meters per second to finish this equation: 300 x 106
divided by 150 x 106.
Ans: 2 meters.
The encoder portion of the ( data encoder/modulator) codes
analog signals for conversion into digitial signals and the modulator
portion transforms the digital signal into the appropriate modulation
format.
Ans: data encoder/modulator
during the process of converting an electrical signal to an optical
signal, the (electrical interface) provides one or a combination of
any electrical protocols to the data encoder/modulator
Ans: electrical interface
,3 | Page
the modulation signal is applied to the (light source) which could be
either a light emitting diode or laser diode.
Ans: light source
What characteristic of fiber-optic cable enhances the security of
signals being transported in the network?
Ans: There is no EMI or RFI radiation, or other detectable energy,
radiating from the cable, so the transport of signal through fiber-optic
cable is very secure.
An optical fiber consists of what three parts?
Ans: An optical fiber is made up of three parts: (1) the core, which
transports the majority of the optical signal; (2) the cladding, which
surrounds the core; and (3) the protective coating around the cladding.
Chromatic dispersion occurs because each wavelength travels
through an optical fiber at slightly different velocities, and signals
, 4 | Page
using those wavelengths will arrive at the receive point at different
times.
Ans: Fabry-Perot (F-P)
One of the drawbacks of this laser is the emission of a number of
discrete wavelengths or side modes.
Ans: Fabry-Perot (F-P)
These lasers are mainly sensitive to temperature variations and
require greater thermal control, which is provided by additional
circuitry.
Ans: Distributed feedback (DFB)
current changes that occur during (direct modulation) causes a
slight change on the instantaneous wavelength of the generated
light from the optical source, called chirp, which is a major limitation.
