Progression: Maintenance Tech I - II
Conventional EXAM WITH ANSWERS
In the tree-and-branch architecture, how is the
downstream signal from the trunk fed to the distribution
branches? - CORRECT ANSWERS ✔✔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 hybrid
fiber/coax (HFC) network? - CORRECT ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔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?
- CORRECT ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔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
ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔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
ANSWERS ✔✔Time domain reflectometer (TDR)
What should you be looking for when analyzing the
network design maps to troubleshoot a problem? -
, CORRECT ANSWERS ✔✔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 ANSWERS ✔✔Being observant and performing
some minor tasks while engaged in regularly scheduled
activities.
Which of the following problem(s) are caused by egress
from a hybrid fiber/coax (HFC) network? - CORRECT
ANSWERS ✔✔Interference with aeronautical navigation
and communication, amateur radio, public service, and
cellular communications.
What leakage level must be entered in the leakage log? -
CORRECT ANSWERS ✔✔Leaks 20 microvolts per meter
(μV/m) or higher measured 10 feet from the cable.
Which is a benefit of an aggressive signal leakage policy?
- CORRECT ANSWERS ✔✔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
Conventional EXAM WITH ANSWERS
In the tree-and-branch architecture, how is the
downstream signal from the trunk fed to the distribution
branches? - CORRECT ANSWERS ✔✔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 hybrid
fiber/coax (HFC) network? - CORRECT ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔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?
- CORRECT ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔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
ANSWERS ✔✔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? - CORRECT ANSWERS ✔✔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
ANSWERS ✔✔Time domain reflectometer (TDR)
What should you be looking for when analyzing the
network design maps to troubleshoot a problem? -
, CORRECT ANSWERS ✔✔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 ANSWERS ✔✔Being observant and performing
some minor tasks while engaged in regularly scheduled
activities.
Which of the following problem(s) are caused by egress
from a hybrid fiber/coax (HFC) network? - CORRECT
ANSWERS ✔✔Interference with aeronautical navigation
and communication, amateur radio, public service, and
cellular communications.
What leakage level must be entered in the leakage log? -
CORRECT ANSWERS ✔✔Leaks 20 microvolts per meter
(μV/m) or higher measured 10 feet from the cable.
Which is a benefit of an aggressive signal leakage policy?
- CORRECT ANSWERS ✔✔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
