NCTI Consumer Digital Electronics
Questions and Answers Already Passed
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? The
National Television System Committe...
NCTI Consumer Digital Electronics
Questions and Answers Already Passed
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? ✔✔The
National Television System Committee (NTSC).
What signal modulation technique do cable operators use to transport digital television signals
through the cable network? ✔✔Quadrature amplitude modulation (QAM).
What is the major change in enhanced definition TV (EDTV) that improved picture quality over
standard definition TV (SDTV)? ✔✔The use of progressive scanning mode in EDTV.
What legislation required all television stations switch to digital-only broadcasting? ✔✔The U.S.
Deficit Reduction Act.
Why are digital terminal adapters (DTA) more cost effective than a full-featured set-top box
(STB)? ✔✔DTAs do not communicate RF upstream..
,What terrestrial transmission technology did the Advanced Television Systems Committee
Which system advanced television to high definition (HD)? ✔✔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? ✔✔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? ✔✔A digital terminal adapter (DTA).
Which technology enables cable operators to control access to services by encrypting the
programming? ✔✔Conditional access (CA).
Which statement below is correct in describing the internal process of a cathode ray tube (CRT)?
✔✔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? ✔✔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? ✔✔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? ✔✔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)? ✔✔DLP images are brighter
than those formed from LCD and LCoS technologies.
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