NCTI EXAM I QUESTIONS AND ANSWERS
In the tree-and-branch architecture, how is the downstream signal from the trunk fed to
the distribution branches? - Answer -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 hybrid fiber/coax (HFC) network? - 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 hybrid fiber/coax
(HFC) network infrastructure for several more years? - Answer -Full Duplex DOCSIS
(FDX) and Extended Spectrum DOCSIS (ESD).
How can a less-experienced technician identify what non-standard symbols on the
network design maps represent? - Answer -The legend at the bottom of the network
design map that defines the map symbols, cable types, and amplifier data.
What is the RF distribution tap value indicated on the tap face plate by a sticker or
number stamped into the housing? - 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? - 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 hybrid fiber/coax (HFC) network? - 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? - Answer -
Time domain reflectometer (TDR)
What should you be looking for when analyzing the network design maps to
troubleshoot a problem? - 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? - Answer -Being observant and performing some minor tasks
while engaged in regularly scheduled activities.
How is the distribution amplifier used in a fiber node? - Answer --Boosts the amplitude
of the downstream RF signal for delivery throughout each neighborhood
In the tree-and-branch architecture, how is the downstream signal from the trunk fed to
the distribution branches? - Answer -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 hybrid fiber/coax (HFC) network? - 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 hybrid fiber/coax
(HFC) network infrastructure for several more years? - Answer -Full Duplex DOCSIS
(FDX) and Extended Spectrum DOCSIS (ESD).
How can a less-experienced technician identify what non-standard symbols on the
network design maps represent? - Answer -The legend at the bottom of the network
design map that defines the map symbols, cable types, and amplifier data.
What is the RF distribution tap value indicated on the tap face plate by a sticker or
number stamped into the housing? - 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? - 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 hybrid fiber/coax (HFC) network? - 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? - Answer -
Time domain reflectometer (TDR)
What should you be looking for when analyzing the network design maps to
troubleshoot a problem? - 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? - Answer -Being observant and performing some minor tasks
while engaged in regularly scheduled activities.
How is the distribution amplifier used in a fiber node? - Answer --Boosts the amplitude
of the downstream RF signal for delivery throughout each neighborhood
