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NCTI INSTALLER EXAM FALL
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NCTI INSTALLER EXAM FALL2024-2025
Distribution amplifiers
Strengthen signals when they go further away from the headend via the trunk
express system?
Carrier wave
A wave with a significantly higher frequency than the input signal
W
Symbol of power
Sampling
the process of monitoring an analog signal at a specified interval
The base ten system
Digits 0–9 are utilized.
6:1
The following compression rates will allow six digital programs to be sent
instead of one analog channel in a 6 MHz bandwidth.
32 decibels or greater*
What modulation error ratio (MER) should a 256-quadrature amplitude
Modulation (QAM) signal have?
,Post-bit error rate (BER)
A measurement of all bit errors after forward error correction has been
performed.
modulation
Reshaping a carrier wave to incorporate information contained in an input
signal
Time Division Multiple Access (TDMA)
the name of the technique that permits the signals to be sent without
compromising data integrity
The function of the shielding
Prevent ingress and egress.
attenuation
A drop in signal intensity via a cable system
Features of Multimode Fiber
It is easier to manage and terminate than single-mode fiber.
Structure of Fiber-optic Cable
Self-supporting aerial fiber cable requires grounding or bonding if it contains
metal.
True for CAT-1 cabling.
It is mostly utilized in voice applications.
CAT-5e
, Twisted-pair cable types are the current standard for home data and voice
wiring.
Number of twists
Responsible for decreasing crosstalk in twisted-pair cables.
Wireless networks use low-power RF waves, so which of the following is true
about signal strength?
The signal strength and data rate decrease as the distance between wireless
devices increases.
Which of the following are true about Wi-Fi technology?
The connection between router and modem is always wired.
What proportion of a cable's attenuation increases or decreases with every 10
degree temperature change?
1%
a feature of high definition television (HDTV).
Audio surround sound utilizing Dolby Digital technology
Plasma
This sort of screen display has been reported to require a lot of energy, have a
limited lifespan, but provides high-contrast, bright, and accurate color visuals.
Rear projection
This style of television display has a deeper cabinet, which influences the size
of the screen.
EDTV
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