Consumer digital electronics 100% SOLUTIONS REVISED 2023//2024

Consumer digital electronics 100% SOLUTIONS REVISED 2023//2024 Which transmission scheme is used as the solution to protect critical video information such as average brightness and synchronizing pulses? - ANSWER Amplitude modulation-vestigial sideband (AM-VSB) What terrestrial transmission technology did the Advanced Television Systems Committee (ATSC) select? - ANSWER Eight-level vestigial sideband (8-VSB). What is necessary to use an analog television for viewing over-the-air (OTA) digital television (DTV) programming? - ANSWER 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)? - ANSWER 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? - ANSWER Quadrature amplitude modulation (QAM). What sets the high definition television (UHD) standard apart from the 4K standard? - ANSWER 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? - ANSWER 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? - ANSWER CableCARD. What is one drawback of the pay-per-view (PPV) system? - ANSWER 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? - ANSWER Transactional video-on-demand (TVOD) Which statement describes the internal process of a cathode ray tube (CRT)? - ANSWER 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? - ANSWER 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? - ANSWER 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? - ANSWER Up to 84 degrees off center. How many glass panels does an to liquid crystal display (LCD) projector? - ANSWER 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)? - ANSWER 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? - ANSWER 20,000 hours. Which projector technology offers more than of 3,500 ANSI (American National Standards Institute) lumens? - ANSWER Laser. What is the best recommendation for a customer wanting to purchase a projection screen for their light-emitting diode (LED) projector? - ANSWER 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? - ANSWER 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? - ANSWER Digital video recorder (DVR). What does the Moving Picture Experts Group (MPEG) decoder do when analog signals pass through it? - ANSWER 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? - ANSWER The broadcaster or service provider. What does a virtual machine (VM) do in "the cloud"? - ANSWER It uses software instead of a phys