1.2 – Given a scenario, install components within the display of a laptop Flashcards
Which kind of video technology do most laptop LCDs use? ❍ A. TFT active matrix ❍ B. Passive matrix ❍ C. OLED ❍ D. MAC ID
A. TFT active-matrix displays are the most common in laptops that use LCDs.
Passive-matrix screens have been discontinued, but you might see an older
laptop that utilizes this technology. OLED technology is a newer and different
technology that is not based on TFT displays, but instead uses emissive display
technology, meaning that each dot on the screen is illuminated by a separate
Which of the following uses an organic compound that emits light? ❍ A. TFT active matrix ❍ B. IPS ❍ C. OLED ❍ D. LCD ❍ E. LED
C. OLED (organic light emitting diode) displays use an organic compound or film
that emits light. TFT active matrix implies LCD, and neither of them uses organic
compounds the way OLED does. In-plane switching (IPS) is a type of LCD technology that increases the available viewing angle compared to older technologies
such as twisted-nematic (TN) matrix LCDs. However, IPS is generally considered
inferior to OLED screens when it comes to brightness and contrast ratio when
viewed from an angle. LED screens use a film and diodes, but not organically in
the way that OLED does, and not at such a small size.
Which of the following are two possible reasons why a laptop’s LCD suddenly
went blank with no user intervention? (Select the two best answers.)
❍ A. Damaged inverter
❍ B. Damaged LCD
❍ C. Burned-out backlight
❍ D. Incorrect resolution setting
A and C. A damaged inverter or burned-out bulb could cause a laptop’s display
to go blank. You can verify whether the LCD is still getting a signal by shining a
flashlight at the screen. A damaged LCD usually works to a certain extent and will
either be cracked, have areas of the Windows interface missing, or show other
signs of damage. An incorrect resolution setting can indeed make the screen suddenly go blank (or look garbled), but that scenario will most likely occur only if
the user has changed the resolution setting—the question specifies with no user
intervention.
Which of the following allows us to access a WLAN? ❍ A. LED ❍ B. Webcam ❍ C. Digitizer ❍ D. Stylus ❍ E. Wi-Fi card
E. A Wi-Fi card, also known as a Wi-Fi network adapter, allows us to connect to a
WLAN (wireless local area network), which is essentially another name for a Wi-Fi
network. LED is a type of display. A webcam is used to communicate visually and
audibly with others, or to record oneself. A digitizer is the device that converts
tapped or written impulses on a screen into digital information that the operating
system can use. A stylus is a writing device used with a digitizer or touchscreen.
