NCTI Fiber Testing & Maintenance Exam
Questions And Answers
What type of interface is common on new-generation optical
meters? -
correct answer ✅USB
Optical power meters used for testing FTTx installations operating
downstream from the headend should be calibrated for which
wavelengths? -
correct answer ✅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? -
correct answer ✅An ORL meter
What do most optical power meters require when measuring
transmit and receive power? -
correct answer ✅Annual calibration that is traceable to the NIST
What must be done first when measuring end-to-end attenuation
using the optical power meter? -
correct answer ✅The light source and optical power meter must
be referenced together before taking measurements
,NCTI Fiber Testing & Maintenance Exam
Questions And Answers
What do most models of laser light sources use as operational
status indicators? -
correct answer ✅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? -
correct answer ✅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? -
correct answer ✅The direction from which the light is coming.
Which of the following statements is accurate regarding laser light
source specifications? -
correct answer ✅Standard environmental specifications for laser
, NCTI Fiber Testing & Maintenance Exam
Questions And Answers
light 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? -
correct answer ✅The waveform
What are the most common single-mode wavelengths used by
OTDR? -
correct answer ✅1310 and 1550
Which class of optical transmitters is the safest for the human eye?
-
correct answer ✅Class 1
What is unique to a fiber break locator? -
correct answer ✅It is the least expensive type of OTDR.
Which of the following is an additional option for a full-feature
OTDR: -
correct answer ✅DWDM
Questions And Answers
What type of interface is common on new-generation optical
meters? -
correct answer ✅USB
Optical power meters used for testing FTTx installations operating
downstream from the headend should be calibrated for which
wavelengths? -
correct answer ✅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? -
correct answer ✅An ORL meter
What do most optical power meters require when measuring
transmit and receive power? -
correct answer ✅Annual calibration that is traceable to the NIST
What must be done first when measuring end-to-end attenuation
using the optical power meter? -
correct answer ✅The light source and optical power meter must
be referenced together before taking measurements
,NCTI Fiber Testing & Maintenance Exam
Questions And Answers
What do most models of laser light sources use as operational
status indicators? -
correct answer ✅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? -
correct answer ✅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? -
correct answer ✅The direction from which the light is coming.
Which of the following statements is accurate regarding laser light
source specifications? -
correct answer ✅Standard environmental specifications for laser
, NCTI Fiber Testing & Maintenance Exam
Questions And Answers
light 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? -
correct answer ✅The waveform
What are the most common single-mode wavelengths used by
OTDR? -
correct answer ✅1310 and 1550
Which class of optical transmitters is the safest for the human eye?
-
correct answer ✅Class 1
What is unique to a fiber break locator? -
correct answer ✅It is the least expensive type of OTDR.
Which of the following is an additional option for a full-feature
OTDR: -
correct answer ✅DWDM
