consumer digital electronics exam 2023 with complete
solution
Which transmission scheme is used as the solution to protect critical video
information such as average brightness and synchronizing pulses?
Amplitude modulation-vestigial sideband (AM-VSB)
What terrestrial transmission technology did the Advanced Television Systems
Committee (ATSC) select?
Eight-level vestigial sideband (8-VSB).
What is necessary to use an analog television for viewing over-the-air (OTA)
digital television (DTV) programming?
An external DTV tuner and decoder.
What is the major change in enhanced definition television (EDTV) that improves
picture quality over standard definition television (SDTV)?
The use of progressive scanning in EDTV.
What signal modulation technique do broadband cable operators use to transport
digital television (DTV) signals through the cable network?
Quadrature amplitude modulation (QAM).
What sets the high definition television (UHD) standard apart from the 4K
standard?
UHD is a consumer display and broadcast standard.
What inexpensive device is used by broadband cable operators to provide digital
television (DTV) services to all of their customers?
A digital terminal adapter (DTA).
What signal security device was developed for set-top boxes (STB) that
broadband cable operators use to authorize the viewing of subscribed cable
services?
CableCARD.
What is one drawback of the pay-per-view (PPV) system?
Its inability to process orders quickly enough when the customer waits until the last
minute to order an event.
Which type of video-on-demand (VOD) refers to a service where users can buy a
particular piece of VOD content on a pay-per-view (PPV) basis?
Transactional video-on-demand (TVOD)
Which statement describes 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.
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.
What is a major disadvantage of organic light-emitting diode (OLED) TVs that
quantum light-emitting diode (QLED) and light-emitting diode (LED) TVs do not
experience?
, Blue diodes within the TV screen degrade over time resulting in a noticeable picture
degradation.
What angle can modern organic light-emitting diode (OLED) TVs be viewed at
with no luminance degradation?
Up to 84 degrees off center.
How many glass panels does an to liquid crystal display (LCD) projector?
Three glass panels for each color: red, blue and green.
Which liquid crystal on silicon (LCoS) technology has an extremely high video
resolution of 35 megapixels (8192 x 4320 pixels)?
Direct-Drive Digital Image Light Amplifier (D-ILA).
What is the typical life span of a light-emitting diode (LED) bulb before it has to be
replaced?
20,000 hours.
Which projector technology offers more than of 3,500 ANSI (American National
Standards Institute) lumens?
Laser.
What is the best recommendation for a customer wanting to purchase a
projection screen for their light-emitting diode (LED) projector?
High-gain gray screen.
Which light-emitting diode (LED) technology uses artificial nanocrystals that
enhance brightness and color performance within the liquid crystal display (LCD)
display?
Quantum light-emitting diode (QLED).
What type of set-top box (STB) allows recording of video and audio onto an
integrated hard drive within the STB?
Digital video recorder (DVR).
What does the Moving Picture Experts Group (MPEG) decoder do when analog
signals pass through it?
It converts the analog signal from analog to digital.
What flags programming, such as video-on-demand (VOD) and pay-per-view
(PPV) so it can be recorded?
The broadcaster or service provider.
What does a virtual machine (VM) do in "the cloud"?
It uses software instead of a physical computer to run programs and deploy
applications.
Of the three layers of computing, which layer operates between the Network and
Transport Layers of the Open Systems Interconnection (OSI) hybrid model?
Platform-as-a-service (PaaS).
Which cloud storage service provides a multi-tenant storage environment that is
best suited for unstructured data?
Public cloud storage.
Which Secure Digital (SD) speed class is best suited for storing and playing full-
HD recordings and large high-definition files?
Class 10.
Which type of digital flash memory card works in all host devices that support
Secure Digital (SD) host devices?
solution
Which transmission scheme is used as the solution to protect critical video
information such as average brightness and synchronizing pulses?
Amplitude modulation-vestigial sideband (AM-VSB)
What terrestrial transmission technology did the Advanced Television Systems
Committee (ATSC) select?
Eight-level vestigial sideband (8-VSB).
What is necessary to use an analog television for viewing over-the-air (OTA)
digital television (DTV) programming?
An external DTV tuner and decoder.
What is the major change in enhanced definition television (EDTV) that improves
picture quality over standard definition television (SDTV)?
The use of progressive scanning in EDTV.
What signal modulation technique do broadband cable operators use to transport
digital television (DTV) signals through the cable network?
Quadrature amplitude modulation (QAM).
What sets the high definition television (UHD) standard apart from the 4K
standard?
UHD is a consumer display and broadcast standard.
What inexpensive device is used by broadband cable operators to provide digital
television (DTV) services to all of their customers?
A digital terminal adapter (DTA).
What signal security device was developed for set-top boxes (STB) that
broadband cable operators use to authorize the viewing of subscribed cable
services?
CableCARD.
What is one drawback of the pay-per-view (PPV) system?
Its inability to process orders quickly enough when the customer waits until the last
minute to order an event.
Which type of video-on-demand (VOD) refers to a service where users can buy a
particular piece of VOD content on a pay-per-view (PPV) basis?
Transactional video-on-demand (TVOD)
Which statement describes 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.
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.
What is a major disadvantage of organic light-emitting diode (OLED) TVs that
quantum light-emitting diode (QLED) and light-emitting diode (LED) TVs do not
experience?
, Blue diodes within the TV screen degrade over time resulting in a noticeable picture
degradation.
What angle can modern organic light-emitting diode (OLED) TVs be viewed at
with no luminance degradation?
Up to 84 degrees off center.
How many glass panels does an to liquid crystal display (LCD) projector?
Three glass panels for each color: red, blue and green.
Which liquid crystal on silicon (LCoS) technology has an extremely high video
resolution of 35 megapixels (8192 x 4320 pixels)?
Direct-Drive Digital Image Light Amplifier (D-ILA).
What is the typical life span of a light-emitting diode (LED) bulb before it has to be
replaced?
20,000 hours.
Which projector technology offers more than of 3,500 ANSI (American National
Standards Institute) lumens?
Laser.
What is the best recommendation for a customer wanting to purchase a
projection screen for their light-emitting diode (LED) projector?
High-gain gray screen.
Which light-emitting diode (LED) technology uses artificial nanocrystals that
enhance brightness and color performance within the liquid crystal display (LCD)
display?
Quantum light-emitting diode (QLED).
What type of set-top box (STB) allows recording of video and audio onto an
integrated hard drive within the STB?
Digital video recorder (DVR).
What does the Moving Picture Experts Group (MPEG) decoder do when analog
signals pass through it?
It converts the analog signal from analog to digital.
What flags programming, such as video-on-demand (VOD) and pay-per-view
(PPV) so it can be recorded?
The broadcaster or service provider.
What does a virtual machine (VM) do in "the cloud"?
It uses software instead of a physical computer to run programs and deploy
applications.
Of the three layers of computing, which layer operates between the Network and
Transport Layers of the Open Systems Interconnection (OSI) hybrid model?
Platform-as-a-service (PaaS).
Which cloud storage service provides a multi-tenant storage environment that is
best suited for unstructured data?
Public cloud storage.
Which Secure Digital (SD) speed class is best suited for storing and playing full-
HD recordings and large high-definition files?
Class 10.
Which type of digital flash memory card works in all host devices that support
Secure Digital (SD) host devices?
