Fiber Installation and Activation exam
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questions with ANSWERS |\ |\
Which standards organization is considered to be the creator of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
world's most recognized communications standards, know as
|\ |\ |\ |\ |\ |\
"recommendations"? - CORRECT ANSWERS ✔✔ITU
|\ |\ |\ |\ |\
In which component in a fiber-optics communication system do
|\ |\ |\ |\ |\ |\ |\ |\ |\
changes to the intensity of the optical signal occur? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔The optical transmitter |\ |\ |\
What is the drawback of using F-P lasers in HSD networks? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔The emission of a number of discrete
|\ |\ |\ |\ |\ |\ |\ |\ |\
wavelengths or side modes. |\ |\ |\
Why are laser diodes most effective when coupled to a singlemode
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
fiber? - CORRECT ANSWERS ✔✔It's high coupled power,
|\ |\ |\ |\ |\ |\ |\ |\
directionality. and speed. |\ |\
What are the factors that contribute to an optical receiver's
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
sensitivity? - CORRECT ANSWERS ✔✔Noise, responsitivity,
|\ |\ |\ |\ |\ |\
response time, linear response, back reflection, and optical detector
|\ |\ |\ |\ |\ |\ |\ |\ |\
material.
,What is a PIN diode? - CORRECT ANSWERS ✔✔An optical
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
detector with current flow that is linear to the intensity of light
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
photons, with one electron/hole pair created for every absorbed
|\ |\ |\ |\ |\ |\ |\ |\ |\
photon until saturation.
|\ |\
What does the amplification process in an APD introduce into the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
electrical output of an optical detector? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Noise
What functions does the detector in an optical receiver perform? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Conversion of an optical carrier to an
|\ |\ |\ |\ |\ |\ |\ |\ |\
electrical signal, and demodulation of the modulated optical carrier.
|\ |\ |\ |\ |\ |\ |\ |\
What happens if the optical signal exceeds the maximum specified
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
input power into a photodetector? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔Nonlinear operation resulting in distortion, data errors, and
|\ |\ |\ |\ |\ |\ |\ |\
signal loss.
|\
What is a characteristic of light in a laser beam? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔The laser beam consists of a limited range of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
wavelengths (monochromatic), with all light waves in phase
|\ |\ |\ |\ |\ |\ |\ |\
(coherent light). |\
, Monitoring the status of optical nodes - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Involves the use of a node transponder that continuously
|\ |\ |\ |\ |\ |\ |\ |\ |\
monitors a number of critical functions.
|\ |\ |\ |\ |\
Digital return path transmissions - CORRECT ANSWERS ✔✔Use
|\ |\ |\ |\ |\ |\ |\ |\
dense wavelength division multiplexing (DWDM) digital return
|\ |\ |\ |\ |\ |\ |\
transmitters in hub-to-headend architectures. |\ |\ |\
What is channel bonding? - CORRECT ANSWERS ✔✔A 3.0
|\ |\ |\ |\ |\ |\ |\ |\ |\
revision to Data Over Cable Service Interface Specification
|\ |\ |\ |\ |\ |\ |\ |\
(DOCSIS) that significantly increases upstream and downstream
|\ |\ |\ |\ |\ |\ |\
transport data rates. |\ |\
What is MPEG? - CORRECT ANSWERS ✔✔A universally accepted
|\ |\ |\ |\ |\ |\ |\ |\ |\
standard for digital television, first released in 1992.
|\ |\ |\ |\ |\ |\ |\
Which of the following is true about optical nodes? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔They contain four main sections: the optical
|\ |\ |\ |\ |\ |\ |\ |\
reciever, the RF amplifier module, the reverse optical transmitter,
|\ |\ |\ |\ |\ |\ |\ |\ |\
and the DC power supply.
|\ |\ |\ |\
What product based on the DOCSIS defines the protocols for IP
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
telephony over HFC networks? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔PacketCable
|\ |\ |\ |\ |\
questions with ANSWERS |\ |\
Which standards organization is considered to be the creator of the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
world's most recognized communications standards, know as
|\ |\ |\ |\ |\ |\
"recommendations"? - CORRECT ANSWERS ✔✔ITU
|\ |\ |\ |\ |\
In which component in a fiber-optics communication system do
|\ |\ |\ |\ |\ |\ |\ |\ |\
changes to the intensity of the optical signal occur? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔The optical transmitter |\ |\ |\
What is the drawback of using F-P lasers in HSD networks? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔The emission of a number of discrete
|\ |\ |\ |\ |\ |\ |\ |\ |\
wavelengths or side modes. |\ |\ |\
Why are laser diodes most effective when coupled to a singlemode
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
fiber? - CORRECT ANSWERS ✔✔It's high coupled power,
|\ |\ |\ |\ |\ |\ |\ |\
directionality. and speed. |\ |\
What are the factors that contribute to an optical receiver's
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
sensitivity? - CORRECT ANSWERS ✔✔Noise, responsitivity,
|\ |\ |\ |\ |\ |\
response time, linear response, back reflection, and optical detector
|\ |\ |\ |\ |\ |\ |\ |\ |\
material.
,What is a PIN diode? - CORRECT ANSWERS ✔✔An optical
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
detector with current flow that is linear to the intensity of light
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
photons, with one electron/hole pair created for every absorbed
|\ |\ |\ |\ |\ |\ |\ |\ |\
photon until saturation.
|\ |\
What does the amplification process in an APD introduce into the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
electrical output of an optical detector? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Noise
What functions does the detector in an optical receiver perform? -
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
CORRECT ANSWERS ✔✔Conversion of an optical carrier to an
|\ |\ |\ |\ |\ |\ |\ |\ |\
electrical signal, and demodulation of the modulated optical carrier.
|\ |\ |\ |\ |\ |\ |\ |\
What happens if the optical signal exceeds the maximum specified
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
input power into a photodetector? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\
✔✔Nonlinear operation resulting in distortion, data errors, and
|\ |\ |\ |\ |\ |\ |\ |\
signal loss.
|\
What is a characteristic of light in a laser beam? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔The laser beam consists of a limited range of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
wavelengths (monochromatic), with all light waves in phase
|\ |\ |\ |\ |\ |\ |\ |\
(coherent light). |\
, Monitoring the status of optical nodes - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔Involves the use of a node transponder that continuously
|\ |\ |\ |\ |\ |\ |\ |\ |\
monitors a number of critical functions.
|\ |\ |\ |\ |\
Digital return path transmissions - CORRECT ANSWERS ✔✔Use
|\ |\ |\ |\ |\ |\ |\ |\
dense wavelength division multiplexing (DWDM) digital return
|\ |\ |\ |\ |\ |\ |\
transmitters in hub-to-headend architectures. |\ |\ |\
What is channel bonding? - CORRECT ANSWERS ✔✔A 3.0
|\ |\ |\ |\ |\ |\ |\ |\ |\
revision to Data Over Cable Service Interface Specification
|\ |\ |\ |\ |\ |\ |\ |\
(DOCSIS) that significantly increases upstream and downstream
|\ |\ |\ |\ |\ |\ |\
transport data rates. |\ |\
What is MPEG? - CORRECT ANSWERS ✔✔A universally accepted
|\ |\ |\ |\ |\ |\ |\ |\ |\
standard for digital television, first released in 1992.
|\ |\ |\ |\ |\ |\ |\
Which of the following is true about optical nodes? - CORRECT
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
ANSWERS ✔✔They contain four main sections: the optical
|\ |\ |\ |\ |\ |\ |\ |\
reciever, the RF amplifier module, the reverse optical transmitter,
|\ |\ |\ |\ |\ |\ |\ |\ |\
and the DC power supply.
|\ |\ |\ |\
What product based on the DOCSIS defines the protocols for IP
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
telephony over HFC networks? - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\
✔✔PacketCable
