FIBER INSTALLATION AND ACTIVATION NEW
Which of the following is true about fiber-optic cable? Choose all that apply. - Answers-
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.
Because the optical fiber is made of dielectric material, the cable does not carry
electrical current, radiate energy, or produce heat or sparks.
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. - Answers- 2
meters.
How much do you know about the elements of a fiber-optic communications network? -
Answers- The encoder portion of the data encoder/modulator codes analog signals for
conversion into digital signals and the modulator portion transforms the digital signal
into the appropriate modulation format.
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.
The modulation signal is applied to the light source which could be either a light emitting
diode (LED) or laser diode.
What characteristic of fiber-optic cable enhances the security of signals being
transported in the network? - Answers- 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.
Which telecommunications standard designation encompasses all things video, voice,
and data? - Answers- The ITU Telecommunication Standardization Sector (ITU-T)
designation encompasses all things video, voice, and data. The ITU-T G-series
recommendations address optical system design and engineering considerations.
Single-mode fiber-optic cable is optimized to transport which wavelengths? - Answers-
Single-mode fiber-optic cable is optimized to transport wavelengths of 1,310 and 1,550
nm.
What are the basic components of all fiber-optic communications networks? - Answers-
All fiber-optic communications networks employ three basic components: (1) the light
source to convert electrons to photons; (2) the optical fiber as a transport medium; and
(3) the photodetector to convert photons to electrons.
An optical fiber consists of what three parts? - Answers- 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.
Which of the following is true about fiber-optic cable? Choose all that apply. - Answers-
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.
Because the optical fiber is made of dielectric material, the cable does not carry
electrical current, radiate energy, or produce heat or sparks.
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. - Answers- 2
meters.
How much do you know about the elements of a fiber-optic communications network? -
Answers- The encoder portion of the data encoder/modulator codes analog signals for
conversion into digital signals and the modulator portion transforms the digital signal
into the appropriate modulation format.
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.
The modulation signal is applied to the light source which could be either a light emitting
diode (LED) or laser diode.
What characteristic of fiber-optic cable enhances the security of signals being
transported in the network? - Answers- 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.
Which telecommunications standard designation encompasses all things video, voice,
and data? - Answers- The ITU Telecommunication Standardization Sector (ITU-T)
designation encompasses all things video, voice, and data. The ITU-T G-series
recommendations address optical system design and engineering considerations.
Single-mode fiber-optic cable is optimized to transport which wavelengths? - Answers-
Single-mode fiber-optic cable is optimized to transport wavelengths of 1,310 and 1,550
nm.
What are the basic components of all fiber-optic communications networks? - Answers-
All fiber-optic communications networks employ three basic components: (1) the light
source to convert electrons to photons; (2) the optical fiber as a transport medium; and
(3) the photodetector to convert photons to electrons.
An optical fiber consists of what three parts? - Answers- 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.
