Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
In the tree-and-branch architecture, how is the downstream signal
from the trunk fed to the distribution branches? -
correct answer ✅Within each trunk amplifier, a portion of the
downstream is fed to a bridger amplifier to boost the signal before
being split and routed to the distribution branches.
What is a common solution when congestion from modem activity
and traffic becomes unacceptable in a HFC (Hybrid fiber/coax
network)? -
correct answer ✅Node splitting, the subdividing of serving areas
into two or more smaller serving areas.
What technologies are defined in DOCSIS 4.0 to help sustain the
HFC(Hybrid fiber/coax) network infrastructure for several more
years? -
correct answer ✅FDX and ESD
How can a less-experienced technician identify what non-standard
symbols on the network design maps represent? -
correct answer ✅The legend at the bottom of the network design
map that defines the map symbols, cable types, and amplifier data.
,Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
What is the RF distribution tap value indicated on the tap face plate
by a sticker or number stamped into the housing? -
correct answer ✅The signal loss between the tap downstream
input port and the tap ports.
How can a distribution amplifier be identified in the network or on
a network design map? -
correct answer ✅The distribution amplifier has multiple
downstream outputs.
What is spliced into the hardline coaxial cable to combine the AC
power with the transported RF signal in a HFC (Hybrid fiber/coax)
network? -
correct answer ✅A power inserter.
What test instrument sends out a test signal and displays any
reflections caused by impedance mismatches in the cable that are
characteristic of cable faults? -
correct answer ✅TDR (Time domain reflectometer)
,Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
What should you be looking for when analyzing the network design
maps to troubleshoot a problem? -
correct answer ✅The device common to those customers affected
before traveling to make signal status checks.
What is required for checking the physical network integrity when
maintaining the coaxial cable network? -
correct answer ✅Being observant and performing some minor
tasks while engaged in regularly scheduled activities.
Controlling Signal Leakage Quiz -
correct answer ✅
Which of the following problem(s) are caused by egress from a
hybrid fiber/coax (HFC) network? -
correct answer ✅Interference with aeronautical navigation and
communication, amateur radio, public service, and cellular
communications.
What leakage level must be entered in the leakage log? -
correct answer ✅Leaks 20 microvolts per meter (μV/m) or higher
measured 10 feet from the cable.
, Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
Which is a benefit of an aggressive signal leakage policy? -
correct answer ✅Decreased ingress-related service calls.
What is done for leak measuring 1.25 microvolts per meter (μV/m)
from about 160 feet away from the coaxial cable network? -
correct answer ✅The leak level is likely 20 μV/m or higher when
measured 10 feet from the cable and must be fixed and recorded in
the leakage log.
If the leakage detector indicates there is a leak and displays a
reading of 14 microvolts per meter (uV/m) measured at 80 feet
from a possible leak source, what is the approximate calculated
level of the leak from 10 feet? -
correct answer ✅112 uV/m.
When using the triangulation technique to find the source of a leak,
why is a dipole antenna used? -
correct answer ✅The dipole antenna is directional and picks up
the strongest signal that is at a right angle, or perpendicular to the
antenna elements.
Conventional NCTI Exam Questions And
Answers
In the tree-and-branch architecture, how is the downstream signal
from the trunk fed to the distribution branches? -
correct answer ✅Within each trunk amplifier, a portion of the
downstream is fed to a bridger amplifier to boost the signal before
being split and routed to the distribution branches.
What is a common solution when congestion from modem activity
and traffic becomes unacceptable in a HFC (Hybrid fiber/coax
network)? -
correct answer ✅Node splitting, the subdividing of serving areas
into two or more smaller serving areas.
What technologies are defined in DOCSIS 4.0 to help sustain the
HFC(Hybrid fiber/coax) network infrastructure for several more
years? -
correct answer ✅FDX and ESD
How can a less-experienced technician identify what non-standard
symbols on the network design maps represent? -
correct answer ✅The legend at the bottom of the network design
map that defines the map symbols, cable types, and amplifier data.
,Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
What is the RF distribution tap value indicated on the tap face plate
by a sticker or number stamped into the housing? -
correct answer ✅The signal loss between the tap downstream
input port and the tap ports.
How can a distribution amplifier be identified in the network or on
a network design map? -
correct answer ✅The distribution amplifier has multiple
downstream outputs.
What is spliced into the hardline coaxial cable to combine the AC
power with the transported RF signal in a HFC (Hybrid fiber/coax)
network? -
correct answer ✅A power inserter.
What test instrument sends out a test signal and displays any
reflections caused by impedance mismatches in the cable that are
characteristic of cable faults? -
correct answer ✅TDR (Time domain reflectometer)
,Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
What should you be looking for when analyzing the network design
maps to troubleshoot a problem? -
correct answer ✅The device common to those customers affected
before traveling to make signal status checks.
What is required for checking the physical network integrity when
maintaining the coaxial cable network? -
correct answer ✅Being observant and performing some minor
tasks while engaged in regularly scheduled activities.
Controlling Signal Leakage Quiz -
correct answer ✅
Which of the following problem(s) are caused by egress from a
hybrid fiber/coax (HFC) network? -
correct answer ✅Interference with aeronautical navigation and
communication, amateur radio, public service, and cellular
communications.
What leakage level must be entered in the leakage log? -
correct answer ✅Leaks 20 microvolts per meter (μV/m) or higher
measured 10 feet from the cable.
, Progression: Maintenance Tech I - II
Conventional NCTI Exam Questions And
Answers
Which is a benefit of an aggressive signal leakage policy? -
correct answer ✅Decreased ingress-related service calls.
What is done for leak measuring 1.25 microvolts per meter (μV/m)
from about 160 feet away from the coaxial cable network? -
correct answer ✅The leak level is likely 20 μV/m or higher when
measured 10 feet from the cable and must be fixed and recorded in
the leakage log.
If the leakage detector indicates there is a leak and displays a
reading of 14 microvolts per meter (uV/m) measured at 80 feet
from a possible leak source, what is the approximate calculated
level of the leak from 10 feet? -
correct answer ✅112 uV/m.
When using the triangulation technique to find the source of a leak,
why is a dipole antenna used? -
correct answer ✅The dipole antenna is directional and picks up
the strongest signal that is at a right angle, or perpendicular to the
antenna elements.
