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 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? - ANSWER Platform-as-a-service (