Fiber Installation and Activation
2024/2025 Exam Questions and Correct
Answers | New Update
Which standards organization is considered to be the creator of the world's
most recognized communications standards, know as "recommendations"?
- 🧠ANSWER ✔✔ITU
In which component in a fiber-optics communication system do changes to
the intensity of the optical signal occur? - 🧠ANSWER ✔✔The optical
transmitter
What is the drawback of using F-P lasers in HSD networks? - 🧠ANSWER
✔✔The emission of a number of discrete wavelengths or side modes.
Why are laser diodes most effective when coupled to a singlemode fiber? -
🧠ANSWER ✔✔It's high coupled power, directionality. and speed.
What are the factors that contribute to an optical receiver's sensitivity? -
🧠ANSWER ✔✔Noise, responsitivity, response time, linear response, back
reflection, and optical detector material.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
1
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,What is a PIN diode? - 🧠ANSWER ✔✔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? - 🧠ANSWER ✔✔Noise
What functions does the detector in an optical receiver perform? -
🧠ANSWER ✔✔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? - 🧠ANSWER ✔✔Nonlinear operation resulting
in distortion, data errors, and signal loss.
What is a characteristic of light in a laser beam? - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Involves the use of
a node transponder that continuously monitors a number of critical
functions.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
2
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Digital return path transmissions - 🧠ANSWER ✔✔Use dense wavelength
division multiplexing (DWDM) digital return transmitters in hub-to-headend
architectures.
What is channel bonding? - 🧠ANSWER ✔✔A 3.0 revision to Data Over
Cable Service Interface Specification (DOCSIS) that significantly increases
upstream and downstream transport data rates.
What is MPEG? - 🧠ANSWER ✔✔A universally accepted standard for
digital television, first released in 1992.
Which of the following is true about optical nodes? - 🧠ANSWER ✔✔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? - 🧠ANSWER ✔✔PacketCable
In a centralized server VOD architecture, - 🧠ANSWER ✔✔The number of
servers needed for video content storage is smaller than in distributed
server architecture.
Which of the following statements about local ad insertion is true? -
🧠ANSWER ✔✔Local ad insertion is performed usually by a video server.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
3
PRIVACY STATEMENT. ALL RIGHTS RESERVED
2024/2025 Exam Questions and Correct
Answers | New Update
Which standards organization is considered to be the creator of the world's
most recognized communications standards, know as "recommendations"?
- 🧠ANSWER ✔✔ITU
In which component in a fiber-optics communication system do changes to
the intensity of the optical signal occur? - 🧠ANSWER ✔✔The optical
transmitter
What is the drawback of using F-P lasers in HSD networks? - 🧠ANSWER
✔✔The emission of a number of discrete wavelengths or side modes.
Why are laser diodes most effective when coupled to a singlemode fiber? -
🧠ANSWER ✔✔It's high coupled power, directionality. and speed.
What are the factors that contribute to an optical receiver's sensitivity? -
🧠ANSWER ✔✔Noise, responsitivity, response time, linear response, back
reflection, and optical detector material.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
1
PRIVACY STATEMENT. ALL RIGHTS RESERVED
,What is a PIN diode? - 🧠ANSWER ✔✔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? - 🧠ANSWER ✔✔Noise
What functions does the detector in an optical receiver perform? -
🧠ANSWER ✔✔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? - 🧠ANSWER ✔✔Nonlinear operation resulting
in distortion, data errors, and signal loss.
What is a characteristic of light in a laser beam? - 🧠ANSWER ✔✔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 - 🧠ANSWER ✔✔Involves the use of
a node transponder that continuously monitors a number of critical
functions.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
2
PRIVACY STATEMENT. ALL RIGHTS RESERVED
, Digital return path transmissions - 🧠ANSWER ✔✔Use dense wavelength
division multiplexing (DWDM) digital return transmitters in hub-to-headend
architectures.
What is channel bonding? - 🧠ANSWER ✔✔A 3.0 revision to Data Over
Cable Service Interface Specification (DOCSIS) that significantly increases
upstream and downstream transport data rates.
What is MPEG? - 🧠ANSWER ✔✔A universally accepted standard for
digital television, first released in 1992.
Which of the following is true about optical nodes? - 🧠ANSWER ✔✔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? - 🧠ANSWER ✔✔PacketCable
In a centralized server VOD architecture, - 🧠ANSWER ✔✔The number of
servers needed for video content storage is smaller than in distributed
server architecture.
Which of the following statements about local ad insertion is true? -
🧠ANSWER ✔✔Local ad insertion is performed usually by a video server.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
3
PRIVACY STATEMENT. ALL RIGHTS RESERVED
