2
Progression Maintenance Tech I - II Conventional Exam with || || || || || || || || ||
accurate detailed solutions || ||
In the tree-and-branch architecture, how is the downstream signal from the trunk fed to the
|| || || || || || || || || || || || || ||
distribution branches? - ✔✔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? - ✔✔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? - ✔✔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? - ✔✔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? - ✔✔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?
|| || || || || || || || || || || || || || || ||
- ✔✔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? - ✔✔A power inserter.
|| || || || || || || || || || || ||
,2
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? - ✔✔Time
|| || || || || || || || || || || || ||
domain reflectometer (TDR) || ||
What should you be looking for when analyzing the network design maps to troubleshoot a
|| || || || || || || || || || || || || || ||
problem? - ✔✔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? - ✔✔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? - ✔✔Interference with aeronautical navigation and communication, amateur
|| || || || || || || || ||
radio, public service, and cellular communications.
|| || || || ||
What leakage level must be entered in the leakage log? - ✔✔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? - ✔✔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? - ✔✔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? - ✔✔112 uV/m.
|| || || || || || || || || ||
, 2
When using the triangulation technique to find the source of a leak, why is a dipole antenna
|| || || || || || || || || || || || || || || ||
used? - ✔✔The dipole antenna is directional and picks up the strongest signal that is at a
|| || || || || || || || || || || || || || || || || ||
right angle, or perpendicular to the antenna elements.
|| || || || || || ||
When trying to find the source of a very strong leakage signal, what should be done? -
|| || || || || || || || || || || || || || || || ||
✔✔Reduce the sensitivity of the leakage detector or even remove the antenna and allow the
|| || || || || || || || || || || || || ||
connector alone to pick up the leakage signal.
|| || || || || || || ||
When troubleshooting signal leakage in the drop system, what does it mean if all signs of
|| || || || || || || || || || || || || || || ||
signal leakage disappear when the ground block is disconnected and terminated on the side
|| || || || || || || || || || || || || ||
connected to the customer premises? - ✔✔Something in the customer premises is the
|| || || || || || || || || || || || ||
leakage source. ||
According to the Federal Communications Commission (FCC) leakage regulations, what
|| || || || || || || || || ||
distance must an antenna be from the network for leakage level measurements? - ✔✔The
|| || || || || || || || || || || || || ||
antenna must be 3 meters (10 feet) from the network elements and 3 meters (10 feet) above
|| || || || || || || || || || || || || || || || ||
the ground.
||
When calculating the network cumulative leakage index (CLI), what is done with leaks that
|| || || || || || || || || || || || ||
are equal to or greater than 50 microvolts per meter (µVm) measured 10 feet from the
|| || || || || || || || || || || || || || || || ||
network? - ✔✔The leakage values are squared and then added together, then multiplied
|| || || || || || || || || || || || ||
times a factor based on how much of the network was tested in 90 days.
|| || || || || || || || || || || || || ||
In modern sweep systems, what type of nonintrusive and noninterfering test signal is
|| || || || || || || || || || || || ||
inserted into the downstream? - ✔✔Narrow-band continuous wave (CW) test carriers,
|| || || || || || || || || || ||
called pulses, at frequencies between channels.
|| || || || ||
Across 6 MHz, what is the maximum in-channel frequency response (ICFR) defined in the
|| || || || || || || || || || || || || ||
Data Over Cable Service Interface Specification (DOCSIS)? - ✔✔3.0 dB peak-to-valley
|| || || || || || || || || || ||
(P/V).
Progression Maintenance Tech I - II Conventional Exam with || || || || || || || || ||
accurate detailed solutions || ||
In the tree-and-branch architecture, how is the downstream signal from the trunk fed to the
|| || || || || || || || || || || || || ||
distribution branches? - ✔✔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? - ✔✔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? - ✔✔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? - ✔✔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? - ✔✔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?
|| || || || || || || || || || || || || || || ||
- ✔✔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? - ✔✔A power inserter.
|| || || || || || || || || || || ||
,2
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? - ✔✔Time
|| || || || || || || || || || || || ||
domain reflectometer (TDR) || ||
What should you be looking for when analyzing the network design maps to troubleshoot a
|| || || || || || || || || || || || || || ||
problem? - ✔✔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? - ✔✔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? - ✔✔Interference with aeronautical navigation and communication, amateur
|| || || || || || || || ||
radio, public service, and cellular communications.
|| || || || ||
What leakage level must be entered in the leakage log? - ✔✔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? - ✔✔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? - ✔✔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? - ✔✔112 uV/m.
|| || || || || || || || || ||
, 2
When using the triangulation technique to find the source of a leak, why is a dipole antenna
|| || || || || || || || || || || || || || || ||
used? - ✔✔The dipole antenna is directional and picks up the strongest signal that is at a
|| || || || || || || || || || || || || || || || || ||
right angle, or perpendicular to the antenna elements.
|| || || || || || ||
When trying to find the source of a very strong leakage signal, what should be done? -
|| || || || || || || || || || || || || || || || ||
✔✔Reduce the sensitivity of the leakage detector or even remove the antenna and allow the
|| || || || || || || || || || || || || ||
connector alone to pick up the leakage signal.
|| || || || || || || ||
When troubleshooting signal leakage in the drop system, what does it mean if all signs of
|| || || || || || || || || || || || || || || ||
signal leakage disappear when the ground block is disconnected and terminated on the side
|| || || || || || || || || || || || || ||
connected to the customer premises? - ✔✔Something in the customer premises is the
|| || || || || || || || || || || || ||
leakage source. ||
According to the Federal Communications Commission (FCC) leakage regulations, what
|| || || || || || || || || ||
distance must an antenna be from the network for leakage level measurements? - ✔✔The
|| || || || || || || || || || || || || ||
antenna must be 3 meters (10 feet) from the network elements and 3 meters (10 feet) above
|| || || || || || || || || || || || || || || || ||
the ground.
||
When calculating the network cumulative leakage index (CLI), what is done with leaks that
|| || || || || || || || || || || || ||
are equal to or greater than 50 microvolts per meter (µVm) measured 10 feet from the
|| || || || || || || || || || || || || || || || ||
network? - ✔✔The leakage values are squared and then added together, then multiplied
|| || || || || || || || || || || || ||
times a factor based on how much of the network was tested in 90 days.
|| || || || || || || || || || || || || ||
In modern sweep systems, what type of nonintrusive and noninterfering test signal is
|| || || || || || || || || || || || ||
inserted into the downstream? - ✔✔Narrow-band continuous wave (CW) test carriers,
|| || || || || || || || || || ||
called pulses, at frequencies between channels.
|| || || || ||
Across 6 MHz, what is the maximum in-channel frequency response (ICFR) defined in the
|| || || || || || || || || || || || || ||
Data Over Cable Service Interface Specification (DOCSIS)? - ✔✔3.0 dB peak-to-valley
|| || || || || || || || || || ||
(P/V).
