NCTI MT1 MT2 STUDY GUIDE 2026 130 FULL
QUESTIONS AND CORRECT SOLUTIONS
GRADED A+
◉ The forward path signal in a traditional tree-and-branch architecture.
Answer: originates at the headend and is transmitted downstream
through coaxial trunk cable and trunk amplifier.
◉ In a HFC network,. Answer: Processing equipment in the headend
converts the forward RF signal to a light signal.
◉ During aerial plant construction,. Answer: The strand is tensioned so
its sag profile matches that of the overhead utility power lines.
◉ With underground plant construction,. Answer: The fiber-optic and
coaxial cables are often places underground with other utility lines to
jointly share construction costs.
◉ Standby power supplies. Answer: continue providing an output
voltage even during a utility power outage by using a back up power
source.
◉ Centralized power configurations. Answer: provide the advantage of
increased reliability through sharing of expensive backup generators and
sophisticated monitoring equipment among different power realms.
,◉ When transmitting broadband signals. Answer: In a two way hybrid
fiber/coax (HFC) network, two or more individual optical fibers are
required for each optical node location.
◉ RF trunk amplifiers. Answer: Have attenuator pads, equalizers, and
duplex filters that control and route the RF signals.
◉ Verifying plant reliability includes. Answer: Frequency response
sweeping, which is adjusting RF amplifier circuits to amplify all
frequencies in the bandpass spectrum as equally as possible
◉ Which of the following is a requirement in the process for measuring
leakage using a dipole antenna, as required by the FCC?. Answer: The
antenna must be placed 3 meters from the system components and 3
meters from the ground.
◉ Many cable companies require which type of leaks to be fixed?.
Answer: All types of leaks must be fixed.
◉ According to the FCC, the leakage log should contain which of the
following?. Answer: The probable cause of the leakage.
◉ Which of the following FCC required information must a cable
system keep on file for two years?. Answer: Annual CLI calculations,
, regular (quarterly) monitoring programs, and a list of all channels used
in the aeronautical bands.
◉ If your leakage detector indicates there is a leak and displays a
reading of 14 microvolts per meter (uV/m) when you are 80 feet from a
possible leak source, what is the approximate calculated level of the leak
from 10 feet?. Answer: 112 uV/m.
◉ If a large signal leak is found in the aerial plant, what is a good first
step in locating the leak?. Answer: Drive around until an absolute peak is
found.
◉ Which of the following best describes demand maintenance
procedures with regard to signal leakage?. Answer: The demand
maintenance procedures can improve the CLI measurement results by
identifying and correcting the largest leaks first.
◉ When troubleshooting signal leakage in the drop system, what is
indicated if all signs of signal leakage disappear when the ground block
is disconnected and terminated on the side connected to the customer
premises?. Answer: The backward route from the ground block to the
tap can be eliminated as a source of The backward route from the ground
block to the tap can be eliminated as source of leakage.
◉ Which typical over-the-air signal sources can cause a false alarm with
a signal leakage detector?. Answer: Typical sources include aircraft
QUESTIONS AND CORRECT SOLUTIONS
GRADED A+
◉ The forward path signal in a traditional tree-and-branch architecture.
Answer: originates at the headend and is transmitted downstream
through coaxial trunk cable and trunk amplifier.
◉ In a HFC network,. Answer: Processing equipment in the headend
converts the forward RF signal to a light signal.
◉ During aerial plant construction,. Answer: The strand is tensioned so
its sag profile matches that of the overhead utility power lines.
◉ With underground plant construction,. Answer: The fiber-optic and
coaxial cables are often places underground with other utility lines to
jointly share construction costs.
◉ Standby power supplies. Answer: continue providing an output
voltage even during a utility power outage by using a back up power
source.
◉ Centralized power configurations. Answer: provide the advantage of
increased reliability through sharing of expensive backup generators and
sophisticated monitoring equipment among different power realms.
,◉ When transmitting broadband signals. Answer: In a two way hybrid
fiber/coax (HFC) network, two or more individual optical fibers are
required for each optical node location.
◉ RF trunk amplifiers. Answer: Have attenuator pads, equalizers, and
duplex filters that control and route the RF signals.
◉ Verifying plant reliability includes. Answer: Frequency response
sweeping, which is adjusting RF amplifier circuits to amplify all
frequencies in the bandpass spectrum as equally as possible
◉ Which of the following is a requirement in the process for measuring
leakage using a dipole antenna, as required by the FCC?. Answer: The
antenna must be placed 3 meters from the system components and 3
meters from the ground.
◉ Many cable companies require which type of leaks to be fixed?.
Answer: All types of leaks must be fixed.
◉ According to the FCC, the leakage log should contain which of the
following?. Answer: The probable cause of the leakage.
◉ Which of the following FCC required information must a cable
system keep on file for two years?. Answer: Annual CLI calculations,
, regular (quarterly) monitoring programs, and a list of all channels used
in the aeronautical bands.
◉ If your leakage detector indicates there is a leak and displays a
reading of 14 microvolts per meter (uV/m) when you are 80 feet from a
possible leak source, what is the approximate calculated level of the leak
from 10 feet?. Answer: 112 uV/m.
◉ If a large signal leak is found in the aerial plant, what is a good first
step in locating the leak?. Answer: Drive around until an absolute peak is
found.
◉ Which of the following best describes demand maintenance
procedures with regard to signal leakage?. Answer: The demand
maintenance procedures can improve the CLI measurement results by
identifying and correcting the largest leaks first.
◉ When troubleshooting signal leakage in the drop system, what is
indicated if all signs of signal leakage disappear when the ground block
is disconnected and terminated on the side connected to the customer
premises?. Answer: The backward route from the ground block to the
tap can be eliminated as a source of The backward route from the ground
block to the tap can be eliminated as source of leakage.
◉ Which typical over-the-air signal sources can cause a false alarm with
a signal leakage detector?. Answer: Typical sources include aircraft
