A+ 220-901 Display Devices Quiz

Which of the LCD technologies listed below offers the fastest response time? Twisted Nematic (TN) Cathode Ray Tube (CRT) Ultra Extended Graphics Array (UXGA) In-Plane Switching (IPS)

Twisted Nematic (TN)

Which of the following answers describe the function of a power inverter? (Select 2 answers) Converts AC power into DC power Used for supplying voltage to backlights of an LCD panel Converts DC power into AC power Used for supplying voltage to backlights of an OLED display

Used for supplying voltage to backlights of an LCD panel Converts DC power into AC power

Which of the display standards listed below uses the 16:10 aspect ratio? XGA SXGA UXGA WUXGA

WUXGA

Display devices with aspect ratios of 16:10 and 16:9 are commonly referred to as: UXGA displays Fullscreen displays WUXGA displays Widescreen displays

Widescreen displays

Which of the following display standards use(s) the 4:3 aspect ratio? (Select all that apply) XGA SXGA UXGA WUXGA

XGA UXGA

The brightness of an LCD display screen is measured in: Hz Lumens dB cd/m2

cd/m2

(T or F) A tiny spot on an LCD monitor display screen that permanently remains black when it should be activated and displaying color is commonly referred to as stuck pixel.

False

What are the characteristic features of the In-Plane Switching (IPS) LCD panel technology? (Select 3 answers) High color quality Fast response times Wide viewing angles Low color quality Slow response times Low viewing angles

High color quality Wide viewing angles Slow response times

What type of unit is used to describe the refresh rate of a computer screen? Hz cd/m2 MHz Lumen KHz

Hz

When a computer monitor is unable to display image on the screen, the most common causes (and the easiest ones to fix) for this problem include: (Select 2 answers) Inverter failure Loose cable connections Bad LCD display Wrong input selection Backlight failure

Loose cable connections Wrong input selection

Which of the following answers describe the features of the Twisted Nematic (TN) LCD panel technology? (Select 3 answers) Low viewing angles Fast response times Low color quality High color quality Slow response times Wide viewing angles

Low viewing angles Fast response times Low color quality

Which of the following units is used for measuring the brightness of an image rendered by an image projector? dB cd/m2 Lumen Hz

Lumen

Which of the acronyms listed below refers to a new type of thin and lightweight display devices offering higher contrast ratio and color quality in comparison to LCD without the need for a special light source to produce a visible image? OLED LED HDMI HTPC

OLED

Which of the following countermeasures prevents shoulder surfing? Cable locks Video surveillance Privacy filters Security guards Screensavers

Privacy filters

In computer graphics, the frequency at which the screen is redrawn is called: Aspect ratio Interlacing Refresh rate Screen resolution

Refresh rate

(T or F): Screen Resolution is a Windows utility used for changing the appearance of connected displays. The tool includes a feature that allows to click and drag a graphical representation of connected display device which in turn enables troubleshooting of multiple monitor misalignment/orientation issues.

True

A monitor filter used to reduce reflection from the surface of a CRT or LCD display is called: Widescreen Antiglare Flat panel Privacy filter

Antiglare

The relative horizontal and vertical size of a digital image displayed on the graphics monitor screen is referred to as: Frame rate Screen resolution Aspect ratio Native resolution

Aspect ratio

Which of the terms listed below refers to the distorted display geometry issue? Frame rate Aspect ratio Native resolution Refresh rate

Aspect ratio

A dim display on a laptop LCD screen might indicate a problem related to: (Select 2 answers) Stuck pixels Backlight Dead pixels Incorrect color patterns Inverter

Backlight Inverter

A permanent computer display screen discoloration caused by displaying the same static image for extended periods of time is known as: Artifact Stuck pixel Burn-in Dead pixel

Burn-in

Which of the acronyms listed below refers to an LCD panel taking advantage of fluorescent lamps? LED CCFL DFS OLED

CCFL

Examples of devices posing risk to electrical safety due to accumulated high voltage include: (Select all that apply) CRTs Power supplies Inverters CPUs Laser printers

CRTs Power supplies Inverters Laser printers

Which of the answers listed below refer to the Widescreen Ultra Extended Graphics Array (WUXGA) display standard (Select 2 answers) 16:10 aspect ratio 1600 x 1200 resolution 4:3 aspect ratio 1024 x 768 resolution 4:3 aspect ratio 1920 x 1200 resolution

16:10 aspect ratio 1920 x 1200 resolution

Which of the following answers refers to the standard display format for HDTV? 4:3 aspect ratio 5:4 aspect ratio 16:9 aspect ratio 16:10 aspect ratio

16:9 aspect ratio

Which of the answers listed below refer to the characteristics of the Extended Graphics Array (XGA) display standard? (Select 2 answers) 4:3 aspect ratio 1280 x 1024 resolution 16:10 aspect ratio 1024 x 768 resolution 5:4 aspect ratio 1920 x 1200 resolution

4:3 aspect ratio 1024 x 768 resolution

What are the characteristic features of the Ultra Extended Graphics Array (UXGA) display standard? (Select 2 answers) 16:10 aspect ratio 1920 x 1200 resolution 5:4 aspect ratio 1280 x 1024 resolution 4:3 aspect ratio 1600 x 1200 resolution

4:3 aspect ratio 1600 x 1200 resolution

The Super Extended Graphics Array (SXGA) display standard features: (Select 2 answers) 1024 x 768 resolution 5:4 aspect ratio 1280 x 1024 resolution 16:10 aspect ratio 1920 x 1200 resolution 4:3 aspect ratio

5:4 aspect ratio 1280 x 1024 resolution

Which of the following statements are true? (Select all that apply) A digital image displayed on the graphics monitor screen consists of pixels arranged in rows and columns The term "screen resolution" refers to the maximum number of pixels in each dimension (horizontal and vertical) that can be addressed by a digital display device In order to ensure the sharpest text and image displayed by a CRT monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the CRT's native resolution) The term "screen resolution" refers to the relative horizontal and vertical size of a digital image displayed on the graphics monitor screen The smallest unit of a digital image represented on the digital display device is known as pixel In order to ensure the sharpest text and image displayed by a LCD monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the LCD's native resolution)

A digital image displayed on the graphics monitor screen consists of pixels arranged in rows and columns The term "screen resolution" refers to the maximum number of pixels in each dimension (horizontal and vertical) that can be addressed by a digital display device The smallest unit of a digital image represented on the digital display device is known as pixel In order to ensure the sharpest text and image displayed by a LCD monitor it is usually recommended to set the monitor to run only at a specific resolution (which is also referred to as the LCD's native resolution)

Which of the actions listed below should be of help while troubleshooting non-responsive touchscreen of a mobile device? Reseating the device's battery Erasing all content/settings and restoring the device to factory defaults (factory reset/hard reset) Pressing a specific key combination/button to perform system restart (soft reset) Removing screen protector and cleaning the screen All of the above

All of the above