NCTI - Installer Book Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
Which of the following will B) Distribution amplifiers.
strengthen signals as they move
farther away from the headend
through the trunk express system?
Which of the following describes a B) A wave with a much higher frequency
carrier wave? than the
input signal.
Which of the following describes B) The reshaping of a carrier wave to
modulation? include
information contained by an input signal.
Which of the following is the W = watts
symbol
for power?
Which of the following describes Sampling
the
process of measuring an analog
signal at a specific interval?
Which of the following is true B) Digits 0 through 9 are used.
about
the base 10 system?
,Which of the following best A) A measurement of all bit error after
describes post bit-error-rate forward
(BER)? error correction has been applied.
Which of the following 6:1
compression
rates will enable six digital
programs
to be transmitted rather than one
analog channel in a 6 MHz
bandwidth?
At what modulation error ratio 32db or greater
(MER)
should a 256-quadrature
amplitude
modulation (QAM) signal operate?
On the return path, signals from B) Time division multiple access (TDMA).
many sources must be sent on the
same cable. What is the name of
the
technique that allows the signals
to
be sent without losing data
integrity?
In a coaxial cable, what is the C) Prevents ingress and egress.
purpose of the shielding?
Which of the following describes A reduction in signal strength through a
attenuation? cable
system.
, Which of the following is a feature B) It is easier to handle and terminate than
of single-
multimode fiber? mode fiber.
Which of the following describes B) Drop fiber cables may use buffer tubes
the containing steel wire.
structure of fiber-optic cable?
Which of the following is true C) It is typically used in voice applications.
about
CAT-1 cabling?
Which of the following twisted-pair A) CAT-5.
cable types is the only one that is
approved by certifying bodies for
data rates in excess of 10 Mbps?
Which of the following is A) Number of twists.
responsible
for reducing crosstalk in
twisted-pair
cable?
Wireless networks use low-power A) The greater the distance between
RF wireless
signals; therefore, which of the devices, the lower the signal strength and
following is true about signal data rate.
strength?
Which of the following is true D) The connection between the router and
about modem
Wi-Fi technology? is always wired.
Answers with Verified Solutions | Latest
Updated 2026
Which of the following will B) Distribution amplifiers.
strengthen signals as they move
farther away from the headend
through the trunk express system?
Which of the following describes a B) A wave with a much higher frequency
carrier wave? than the
input signal.
Which of the following describes B) The reshaping of a carrier wave to
modulation? include
information contained by an input signal.
Which of the following is the W = watts
symbol
for power?
Which of the following describes Sampling
the
process of measuring an analog
signal at a specific interval?
Which of the following is true B) Digits 0 through 9 are used.
about
the base 10 system?
,Which of the following best A) A measurement of all bit error after
describes post bit-error-rate forward
(BER)? error correction has been applied.
Which of the following 6:1
compression
rates will enable six digital
programs
to be transmitted rather than one
analog channel in a 6 MHz
bandwidth?
At what modulation error ratio 32db or greater
(MER)
should a 256-quadrature
amplitude
modulation (QAM) signal operate?
On the return path, signals from B) Time division multiple access (TDMA).
many sources must be sent on the
same cable. What is the name of
the
technique that allows the signals
to
be sent without losing data
integrity?
In a coaxial cable, what is the C) Prevents ingress and egress.
purpose of the shielding?
Which of the following describes A reduction in signal strength through a
attenuation? cable
system.
, Which of the following is a feature B) It is easier to handle and terminate than
of single-
multimode fiber? mode fiber.
Which of the following describes B) Drop fiber cables may use buffer tubes
the containing steel wire.
structure of fiber-optic cable?
Which of the following is true C) It is typically used in voice applications.
about
CAT-1 cabling?
Which of the following twisted-pair A) CAT-5.
cable types is the only one that is
approved by certifying bodies for
data rates in excess of 10 Mbps?
Which of the following is A) Number of twists.
responsible
for reducing crosstalk in
twisted-pair
cable?
Wireless networks use low-power A) The greater the distance between
RF wireless
signals; therefore, which of the devices, the lower the signal strength and
following is true about signal data rate.
strength?
Which of the following is true D) The connection between the router and
about modem
Wi-Fi technology? is always wired.
