NCTI Fiber Testing & Maintenance
Exam Questions and Answers 100%
Pass
What type of interface is common on new-generation optical meters? -
✔✔USB
Optical power meters used for testing FTTx installations operating
downstream from the headend should be calibrated for which
wavelengths? - ✔✔1490, 1550, and 1577
Besides a stabilized light source, an enhanced optical power meter, and an
optical talk set, what else do optical loss test sets include in their combined
features? - ✔✔An ORL meter
What do most optical power meters require when measuring transmit and
receive power? - ✔✔Annual calibration that is traceable to the NIST
1
100% Pass Guarantee Katelyn Whitman, All Rights
,What must be done first when measuring end-to-end attenuation using the
optical power meter? - ✔✔The light source and optical power meter must
be referenced together before taking measurements
What do most models of laser light sources use as operational status
indicators? - ✔✔Controls for turning the light source on and off, selecting
the laser wavelength for testing, and selecting the modulation signals;
display indicators for the selected wavelength, mode of operation, battery
status, and power source.
What occurs when a laser light source is used with an optical fiber
identifier to test fibers? - ✔✔A 2-kHz modulation provides a test signal
allowing the fiber under test to be detected by the optical fiber identifier.
Besides determining whether the light is on fiber and the light is
modulated and carrying traffic, what does is the third function the optical
fiber identifiers determine? - ✔✔The direction from which the light is
coming.
Which of the following statements is accurate regarding laser light source
specifications? - ✔✔Standard environmental specifications for laser light
2
100% Pass Guarantee Katelyn Whitman, All Rights
, sources range from 13°F to 130°F for operating temperatures and - 19°F to
158°F for storage temperatures.
What visually represents the optical fiber's attenuation characteristics and
the OTDR setup? - ✔✔The waveform
What are the most common single-mode wavelengths used by OTDR? -
✔✔1310 and 1550
Which class of optical transmitters is the safest for the human eye? -
✔✔Class 1
What is unique to a fiber break locator? - ✔✔It is the least expensive type of
OTDR.
Which of the following is an additional option for a full-feature OTDR: -
✔✔DWDM
Which of the following is true regarding reflections in an optical fiber? -
✔✔Microscopic density fluctuations, impurities, and structural
imperfections in the fiber cause Rayleigh scattering.
3
100% Pass Guarantee Katelyn Whitman, All Rights
Exam Questions and Answers 100%
Pass
What type of interface is common on new-generation optical meters? -
✔✔USB
Optical power meters used for testing FTTx installations operating
downstream from the headend should be calibrated for which
wavelengths? - ✔✔1490, 1550, and 1577
Besides a stabilized light source, an enhanced optical power meter, and an
optical talk set, what else do optical loss test sets include in their combined
features? - ✔✔An ORL meter
What do most optical power meters require when measuring transmit and
receive power? - ✔✔Annual calibration that is traceable to the NIST
1
100% Pass Guarantee Katelyn Whitman, All Rights
,What must be done first when measuring end-to-end attenuation using the
optical power meter? - ✔✔The light source and optical power meter must
be referenced together before taking measurements
What do most models of laser light sources use as operational status
indicators? - ✔✔Controls for turning the light source on and off, selecting
the laser wavelength for testing, and selecting the modulation signals;
display indicators for the selected wavelength, mode of operation, battery
status, and power source.
What occurs when a laser light source is used with an optical fiber
identifier to test fibers? - ✔✔A 2-kHz modulation provides a test signal
allowing the fiber under test to be detected by the optical fiber identifier.
Besides determining whether the light is on fiber and the light is
modulated and carrying traffic, what does is the third function the optical
fiber identifiers determine? - ✔✔The direction from which the light is
coming.
Which of the following statements is accurate regarding laser light source
specifications? - ✔✔Standard environmental specifications for laser light
2
100% Pass Guarantee Katelyn Whitman, All Rights
, sources range from 13°F to 130°F for operating temperatures and - 19°F to
158°F for storage temperatures.
What visually represents the optical fiber's attenuation characteristics and
the OTDR setup? - ✔✔The waveform
What are the most common single-mode wavelengths used by OTDR? -
✔✔1310 and 1550
Which class of optical transmitters is the safest for the human eye? -
✔✔Class 1
What is unique to a fiber break locator? - ✔✔It is the least expensive type of
OTDR.
Which of the following is an additional option for a full-feature OTDR: -
✔✔DWDM
Which of the following is true regarding reflections in an optical fiber? -
✔✔Microscopic density fluctuations, impurities, and structural
imperfections in the fiber cause Rayleigh scattering.
3
100% Pass Guarantee Katelyn Whitman, All Rights
