©THEBRIGHT 2024/2025 ALL RIGHTS RESERVED 10:15AM A+
Fiber Installation and Activation Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass.
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.
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).
1
, ©THEBRIGHT 2024/2025 ALL RIGHTS RESERVED 10:15AM A+
Monitoring the status of optical nodes - Answer✔Involves the use of a node transponder that
continuously monitors a number of critical functions.
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.
In regard to providing high-speed data (HSD) service, - Answer✔The CMTS can provide a data
transfer rate up to 38Mbps using 256-QAM in a single 6MHz channel.
Which of the following is true about the SONET transmission standard? - Answer✔SONET is the
North American standard used for telephony applications.
Why was the zero-dispersion point in single-mode fiber moved to 1,550 nm? - Answer✔To take
advantage of the low intrinsic absorption and lower attenuation at 1550nm single-mode fiber.
What type of single-mode fiber is intended for FTTH installations? - Answer✔The ITU-T G.657
BiF
What are the primary causes of intrinsic loss in SMF? - Answer✔Material absorption and
Rayleigh scattering
The phenomenon, total internal reflection, is what enables an optical fiber to guide light. What
characteristic of optical fiber causes total internal reflection? - Answer✔The difference in
refractive indexes, between cladding, and core,causes light to be reflected off the cladding and
back into the core along the optical fiber.
2
Fiber Installation and Activation Exam
Questions And Answers |Latest 2025 |
Guaranteed Pass.
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.
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).
1
, ©THEBRIGHT 2024/2025 ALL RIGHTS RESERVED 10:15AM A+
Monitoring the status of optical nodes - Answer✔Involves the use of a node transponder that
continuously monitors a number of critical functions.
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.
In regard to providing high-speed data (HSD) service, - Answer✔The CMTS can provide a data
transfer rate up to 38Mbps using 256-QAM in a single 6MHz channel.
Which of the following is true about the SONET transmission standard? - Answer✔SONET is the
North American standard used for telephony applications.
Why was the zero-dispersion point in single-mode fiber moved to 1,550 nm? - Answer✔To take
advantage of the low intrinsic absorption and lower attenuation at 1550nm single-mode fiber.
What type of single-mode fiber is intended for FTTH installations? - Answer✔The ITU-T G.657
BiF
What are the primary causes of intrinsic loss in SMF? - Answer✔Material absorption and
Rayleigh scattering
The phenomenon, total internal reflection, is what enables an optical fiber to guide light. What
characteristic of optical fiber causes total internal reflection? - Answer✔The difference in
refractive indexes, between cladding, and core,causes light to be reflected off the cladding and
back into the core along the optical fiber.
2
