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NCTI Consumer Digital Electronics Questions and Answers with Complete Solutions
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NCTI Consumer Digital Electronics Questionsand Answers with Complete Solutions
What is the name of the group that established the initial technical standards for
the television industry, ensuring a single system would deliver consistent service
across the nation? - correct answer✔✔ The National Television System
Committee (NTSC).
What signal modulation technique do cable operators use to transport digital
television signals through the cable network? - correct answer✔✔ Quadrature
amplitude modulation (QAM).
What is the major change in enhanced definition TV (EDTV) that improved picture
quality over standard definition TV (SDTV)? - correct answer✔✔ The use of
progressive scanning mode in EDTV.
What legislation required all television stations switch to digital-only
broadcasting? - correct answer✔✔ The U.S. Deficit Reduction Act.
Why are digital terminal adapters (DTA) more cost effective than a full-featured
set-top box (STB)? - correct answer✔✔ DTAs do not communicate RF upstream..
What terrestrial transmission technology did the Advanced Television Systems
Committee (ATSC) select?. - correct answer✔✔ 8-level vestigial sideband (8-
VSB)
Which system advanced television to high definition (HD)? - correct answer✔✔
The multiple sub-Nyquist sampling encoding (MUSE) system.
How do set-top boxes (STB) typically connect to high definition televisions (HDTV)
to provide the best picture quality? - correct answer✔✔ To provide the best HD
picture, STBs typically connect to HDTVs via a High-Definition Multimedia
Interface (HDMI).
, What inexpensive device is used by cable operators to provide digital TV (DTV)
services to all of their customers? - correct answer✔✔ A digital terminal
adapter (DTA).
Which technology enables cable operators to control access to services by
encrypting the programming? - correct answer✔✔ Conditional access (CA).
Which statement below is correct in describing the internal process of a cathode
ray tube (CRT)? - correct answer✔✔ Magnetically directed electron beams,
from electron guns, horizontally move back and forth, sending electron beams
through a shadow mask.
Which type of TV technology had to overcome early disadvantages such as weak
contrast, a lag or trail effect where fast-moving images appear to "smear" and
screen door effect where viewers see a visible pixel structure at close range? -
correct answer✔✔ Liquid crystal display (LCD)
The liquid crystal in liquid crystal display (LCD) technology is suspended between
two glass plates and the crystals are normally in a twisted configuration. What
type of light follows the orientation of the crystals, and is allowed to pass
through? - correct answer✔✔ Polarized Light.
Projection technology enables larger displays than those of flat panel or direct
view TV sets. With rear-projection TV sets, what does the depth of the TV set
depend on? - correct answer✔✔ The size of the screen
A customer is interested in purchasing a projection display and asks how DLP
compares to other technologies. How does DLP technology compare to liquid
crystal display (LCD) technology and related technologies, such as liquid crystal on
silicon (LCoS)? - correct answer✔✔ DLP images are brighter than those formed
from LCD and LCoS technologies.
A customer is interested in purchasing a video projector and asks about the
different video display technologies. Which video display technology has strength
that include high color saturation and color accuracy? - correct answer✔✔
Liquid crystal display (LCD)
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