7.1.3 to 7.2.1 Review
Quiz by Kwok Louie
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44 questions
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- Q1How do LED backlights contribute to the energy efficiency of LCD displays?LED backlights consume less power compared to traditional CCFL backlights.LED backlights increase the screen resolution of LCD displays.LED backlights provide better color accuracy in LCD displays.LED backlights reduce the response time of LCD displays.30s
- Q2In terms of display technology, what does OLED stand for?Optimized Light Emitting DiodeOscillating Light Emitting DiodeOrganic Light Emitting DiodeOrganic Liquid Emitting Diode30s
- Q3What happens if an LCD inverter fails?The colors on the screen will become distorted.The screen will display flickering images.The touch functionality of the screen will stop working.The screen may appear dim or completely dark.30s
- Q4What is the purpose of the cold-cathode fluorescent lamp (CCFL) within an LCD inverter?To regulate the touch sensitivity of the LCD screen.To control the refresh rate of the LCD screen.To adjust the color temperature of the LCD screen.To provide the backlight illumination for the LCD screen.30s
- Q5What is the difference between a fluorescent backlight and an LED backlight?Fluorescent backlights emit heat, while LED backlights emit lightFluorescent backlights have a shorter lifespan than LED backlightsFluorescent backlights use gas and phosphors to produce light, while LED backlights use light-emitting diodes.Fluorescent backlights are more energy-efficient than LED backlights30s
- Q6Which gas is used in a fluorescent backlight to emit light?Oxygen gasCarbon dioxideMercury vaporNitrogen gas30s
- Q7What does LCD stand for in the context of display technology?Luminous Capacitor DiodeLiquid Crystal DisplayLight Conducting DiodeLarge Color Display30s
- Q8What is the primary advantage of using an In-Plane Switching (IPS) panel in LCD displays compared to Twisted Nematic (TN) panels?Lower power consumptionWider viewing angles and better color reproductionHigher refresh ratesCheaper manufacturing costs30s
- Q9What method do most modern LCD screens use to backlight the display?EL wireCCFLIncandescent bulbsLED30s
- Q10What is a common application of a digitizer?Printing digital photosCreating physical copies of digital filesSending emailsDigitizing handwritten notes or drawings into digital format30s
- Q11What is the purpose of a digitizer in the context of touchscreens?To connect the device to the internetTo convert touch inputs into digital signals for the deviceTo display images on the screenTo charge the device30s
- Q12Which of the following is a benefit of detachable screens in professional settings?Heavier weight to carry aroundLimited software compatibilityIncreased flexibility to switch between laptop and tablet modesDecreased screen resolution30s
- Q13How can detachable screens enhance collaboration in professional settings?By reducing the screen size compared to traditional laptopsBy facilitating easy sharing and passing around of the screen for group workBy increasing the weight of the device, making it less portableBy limiting access to only one user at a time30s
- Q14Which of the following types of waves are used for wifi communication?Ultraviolet wavesMicrowavesInfrared wavesRadio waves30s
- Q15What is the frequency range of radio waves typically used for wifi communication?20 GHz2.4 GHz and 5 GHz500 MHz10 GHz30s