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NCTI MT1-MT2 130 Actual Questions andAnswers 100% Correct | Latest 2023
According to SCTE- and NCTA- recommended trunk system map
symbols, fiber-optic cable is represented by - Answer Double
arrows within a small circle on a solid line.
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
communication signals and ham, mobile, and government radio
broadcasts.
When adjusting or selecting the elements of a dipole antenna for
measuring signal leakage, what is the approximate length of each
element relative to the wavelength of the signal being measured? -
Answer One-quarter wavelength.
Which of the following problem(s) are caused by egress? - Answer
Interference with aeronautieal navigation
and communication, amateur radio public service, and cellular
communications.
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