220-1101 Display Devices — Timed 20 Questions

Question 1

A user reports that their external monitor connected via HDMI shows a blurry image and the text is hard to read. They have tried a different HDMI cable and the issue persists. What is the most likely cause?

Accepted Answer

The display resolution is set below the monitor's native resolution.. This scenario tests understanding of display resolution settings. The most common cause of blurry text on an external monitor is incorrect resolution scaling, not a cable or driver issue. Adjusting the display resolution to the monitor's native resolution will usually fix the problem.

Answer

The HDMI cable is defective.

Answer

The monitor's refresh rate is set too low.

Answer

The graphics driver is corrupted.

Question 2

A technician is troubleshooting a monitor that displays a 'fuzzy' image with ghosting. The monitor is connected via VGA. The technician has already tried a different VGA cable and the issue persists. What should the technician check next?

Accepted Answer

Route the VGA cable away from power cables and other electronics.. VGA is an analog signal that can be affected by electrical interference. Ghosting and fuzziness are classic symptoms of interference from nearby power cables or other electronics. Moving the VGA cable away from power sources is the next logical step.

Answer

Replace the monitor.

Answer

Change the resolution to a lower setting.

Answer

Update the graphics driver.

Question 3

A technician is configuring a dual-monitor setup for a stock trader. One monitor is a 24-inch 1080p display, and the other is a 27-inch 4K display. The user wants the mouse to move seamlessly between them. What setting must the technician configure in the OS display settings?

Accepted Answer

Arrange the displays in the OS to match their physical positions.. When using monitors with different resolutions, the OS must align the virtual displays correctly. The technician needs to arrange the monitors in the display settings to match their physical layout, ensuring the mouse moves smoothly across the bezels.

Answer

Set both monitors to the same resolution.

Answer

Adjust the scaling settings on the 4K monitor.

Answer

Set the 4K monitor as the primary display.

Question 4

A user reports that their monitor displays a 'No Signal' message when they turn on their computer. The monitor is connected via DisplayPort. The technician checks that the monitor is powered on and the cable is secure. What should the technician check next?

Accepted Answer

Try a different DisplayPort cable or port on the GPU.. DisplayPort cables can sometimes have issues with the locking mechanism or be partially unseated. The next logical step is to try a different DisplayPort cable or port on the GPU to isolate the issue.

Answer

Replace the monitor.

Answer

Check the input source setting on the monitor.

Answer

Update the graphics driver.

Question 5

A customer wants to connect a laptop to a 4K TV for a presentation. The laptop has an HDMI 1.4 port, and the TV supports HDMI 2.0. What is the maximum resolution and refresh rate the customer can expect?

Accepted Answer

4K at 30Hz. HDMI 1.4 supports 4K resolution at 30Hz, while HDMI 2.0 supports 4K at 60Hz. The bottleneck is the laptop's HDMI 1.4 port, so the output will be limited to 4K at 30Hz.

Answer

4K at 60Hz

Answer

1080p at 120Hz

Answer

1440p at 60Hz

Question 6

A user's laptop screen has a small crack in the corner, and the display shows lines and discoloration in that area. The rest of the screen works. What is the most cost-effective solution?

Accepted Answer

Replace the LCD panel.. A cracked LCD panel requires replacement of the entire screen assembly, not just the glass. Replacing the whole LCD panel is the standard and most cost-effective repair for this type of physical damage.

Answer

Replace the entire laptop.

Answer

Replace the display cable.

Answer

Use an external monitor permanently.

Question 7

A technician is installing a new LCD monitor for a user who does photo editing. The user complains that colors appear washed out compared to their old CRT monitor. What should the technician adjust first?

Accepted Answer

Adjust the color settings in the monitor's on-screen display.. LCD monitors often have different color gamuts and settings than CRTs. The most straightforward fix is to adjust the color calibration settings in the monitor's OSD or OS to improve color accuracy.

Answer

Replace the video cable with a DVI cable.

Answer

Update the graphics driver.

Answer

Set the resolution to the monitor's native resolution.

Question 8

A user's all-in-one PC has a touchscreen that is not responding correctly. The technician calibrates the touchscreen, but the issue persists. The technician then notices that the screen is slightly misaligned with the bezel. What is the most likely cause?

Accepted Answer

The LCD panel has shifted inside the chassis.. A misaligned screen relative to the bezel suggests that the LCD panel has shifted inside the chassis. This physical misalignment can cause the touch sensor to be out of sync with the display, leading to touch inaccuracies that calibration cannot fix.

Answer

The touchscreen driver is corrupted.

Answer

The digitizer is failing.

Answer

The operating system needs a touchscreen firmware update.

Question 9

A customer wants to use a 34-inch ultrawide monitor (3440x1440) with their desktop PC. The PC has an older GPU with a DVI-D dual-link port and an HDMI 1.4 port. Which connection should the technician recommend for the best image quality?

Accepted Answer

HDMI 1.4. 3440x1440 at 60Hz requires significant bandwidth. HDMI 1.4 can support this resolution at 60Hz, but DVI-D dual-link can also handle it. However, HDMI is generally preferred for modern monitors, and DVI-D dual-link is less common. The correct answer is HDMI 1.4, as it can support the resolution and is more versatile.

Answer

DVI-D dual-link

Answer

VGA

Answer

DisplayPort

Question 10

A user's laptop screen flickers intermittently, but the external monitor works fine. What is the most likely cause?

Accepted Answer

The display cable connecting the motherboard to the screen is loose or damaged.. Since the external monitor works fine, the issue is likely with the laptop's display components. A loose or failing display cable is a common cause of intermittent flickering on built-in screens.

Answer

The graphics driver is outdated.

Answer

The LCD panel is failing.

Answer

The inverter or backlight is failing.

Question 11

A technician is installing a new touchscreen monitor for a point-of-sale system. The monitor connects via HDMI and USB. The display works, but touch input is not recognized. What should the technician check first?

Accepted Answer

Install the touchscreen driver from the manufacturer. Touchscreen monitors often require both video (HDMI) and data (USB) connections. The USB cable provides the touch data to the computer. If the driver is missing or the USB connection is faulty, touch input won't work. The first step is to verify the USB connection and install the correct driver.

Answer

Ensure the HDMI cable is securely connected

Answer

Replace the USB cable with a higher-speed version

Answer

Calibrate the touchscreen in Windows settings

Question 12

A user connects a 4K monitor to their laptop using a USB-C port. The monitor is detected, but the resolution is stuck at 1920x1080. The laptop supports 4K output via USB-C. What is the most likely reason?

Accepted Answer

The USB-C cable does not support DisplayPort Alt Mode. USB-C can carry video signals via DisplayPort Alt Mode or Thunderbolt, but not all USB-C cables support the necessary bandwidth for 4K. A cable that only supports USB 2.0 or lower data rates cannot handle the high resolution. The user likely needs a cable rated for DisplayPort Alt Mode or Thunderbolt.

Answer

The monitor's HDMI port is defective

Answer

The laptop's graphics driver is outdated

Answer

The monitor's refresh rate is set too high

Question 13

A technician is troubleshooting a projector that displays a faint, ghost-like image even when no input source is connected. The projector has been in use for several years. What is the most likely cause?

Accepted Answer

The LCD panel has image burn-in. This is a classic symptom of a burned-in image on an LCD projector panel. Over time, static images can permanently etch into the panel, causing a ghost image. This is different from a faulty bulb, which would cause dimness or no light.

Answer

The projector bulb is nearing the end of its life

Answer

The input cable is picking up interference

Answer

The projector's lens is dirty

Question 14

A user reports that their desktop computer's display is very dim, even at maximum brightness settings. The monitor is an older LCD model with a CCFL backlight. What component is most likely failing?

Accepted Answer

The inverter board. CCFL-backlit LCD monitors use an inverter to convert DC power to high-voltage AC to light the fluorescent tube. A failing inverter often results in a dim display or one that flickers before failing completely. This is a common failure in older monitors.

Answer

The LCD panel itself

Answer

The video cable

Answer

The power supply unit

Question 15

A user reports that their new high-resolution monitor (2560x1440) connected via DisplayPort shows intermittent black screens for a few seconds. The monitor works fine at lower resolutions. What is the most likely issue?

Accepted Answer

The DisplayPort cable is not certified for the required bandwidth. High resolutions require significant bandwidth over DisplayPort. If the cable is not rated for the required version (e.g., DP 1.2 for 1440p at high refresh rates), it can cause signal loss. The intermittent black screen is a classic symptom of a cable that cannot handle the data rate.

Answer

The monitor's power saving mode is too aggressive

Answer

The graphics card is overheating

Answer

The monitor's firmware is outdated

Question 16

A customer reports that their laptop screen flickers intermittently, especially when they adjust the lid angle. The image is clear when the screen is at a specific angle but flickers or goes black at others. What is the most likely cause?

Accepted Answer

The display cable is loose or damaged. This scenario describes a classic symptom of a failing or loose display cable, which connects the motherboard to the LCD panel. The cable is often routed through the hinge, and movement causes intermittent contact. Replacing or reseating the cable usually resolves the issue.

Answer

The LCD panel has a dead pixel

Answer

The video card driver is outdated

Answer

The inverter is failing

Question 17

A user complains that their external monitor shows a 'No Signal' message when connected to their laptop via HDMI. The laptop display works fine. You test the monitor with another computer and it works. What should you check first?

Accepted Answer

Press the function key to switch display modes. Since the monitor works with another computer, the issue is likely with the laptop's output or settings. The most common cause is that the laptop is not set to output to the external display. Pressing the function key (e.g., F4 or F8) toggles display modes.

Answer

Replace the HDMI cable

Answer

Update the laptop's BIOS

Answer

Reinstall the graphics driver

Question 18

A technician is setting up a dual-monitor configuration for a financial analyst who needs to see many columns of data side by side. The user wants the sharpest possible text and the highest pixel density. Which type of display panel should the technician recommend?

Accepted Answer

IPS (In-Plane Switching) panel. IPS (In-Plane Switching) panels offer superior color accuracy and wide viewing angles, but for sharp text and high pixel density, the resolution is the key factor. However, among panel types, IPS provides better image quality for text work than TN, though VA offers good contrast. The correct answer here is IPS for overall sharpness and consistency.

Answer

TN (Twisted Nematic) panel

Answer

VA (Vertical Alignment) panel

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OLED (Organic Light Emitting Diode) panel

Question 19

A technician is configuring a new all-in-one PC for a graphic designer. The designer needs to calibrate the display for accurate color reproduction. Which technology should the technician ensure the monitor supports?

Accepted Answer

IPS panel with high color gamut. Color calibration is essential for graphic design work. IPS panels are known for wide color gamuts and consistent color reproduction, making them ideal for this task. TN and VA panels have limitations in color accuracy and viewing angles.

Answer

TN panel with 144Hz refresh rate

Answer

VA panel with high contrast ratio

Answer

OLED panel with burn-in protection

Question 20

A user complains that their external monitor connected via VGA shows a slightly blurry image with faint horizontal lines. The monitor works perfectly with another computer using the same VGA cable. What is the most likely cause?

Accepted Answer

There is a ground loop between the computer and monitor. VGA is an analog signal, and blurry images with horizontal lines often indicate interference or a ground loop issue. Since the monitor and cable work elsewhere, the problem is likely with the computer's VGA output or electrical interference from the computer's power supply. A ground loop can introduce noise into the analog signal.

Answer

The monitor's resolution is set too high for VGA

Answer

The VGA port on the computer has bent pins

Answer

The graphics driver is corrupt