220-1201 Practice Test 35 — 15 Questions

Question 1

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

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The video card driver is outdated

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The inverter is failing

Question 2

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

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Update the laptop's BIOS

Answer

Reinstall the graphics driver

Question 3

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.

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TN (Twisted Nematic) panel

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VA (Vertical Alignment) panel

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OLED (Organic Light Emitting Diode) panel

Question 4

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

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The video cable

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The power supply unit

Question 5

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

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VA panel with high contrast ratio

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OLED panel with burn-in protection

Question 6

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 7

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

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The input cable is picking up interference

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The projector's lens is dirty

Question 8

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

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The graphics card is overheating

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The monitor's firmware is outdated

Question 9

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

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Replace the USB cable with a higher-speed version

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Calibrate the touchscreen in Windows settings

Question 10

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

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The graphics driver is corrupt

Question 11

A customer reports that their external monitor connected via HDMI flickers intermittently. They have tried a different HDMI cable and a different monitor, but the issue persists. The laptop display works fine. Which component is most likely causing the problem?

Accepted Answer

The laptop's HDMI port. The HDMI port on the laptop is the most likely cause because the issue follows the laptop, not the cable or monitor. This tests the ability to isolate a faulty display output port through process of elimination.

Answer

The laptop's graphics driver

Answer

The HDMI cable

Answer

The external monitor

Question 12

A user complains that text on their new 27-inch 4K monitor appears very small and hard to read. The display is set to its native resolution. What is the most effective way to make text readable without sacrificing image quality?

Accepted Answer

Increase the display scaling percentage in OS settings. Adjusting the display scaling in the operating system increases the size of text and UI elements while keeping the native resolution, preserving sharpness. Lowering resolution would make text larger but blurry.

Answer

Reduce the screen resolution to 1920x1080

Answer

Replace the monitor with a lower-resolution model

Answer

Adjust the monitor's physical sharpness setting

Question 13

A technician is installing a new video card in a desktop PC used for graphic design. The card has one HDMI port, one DisplayPort, and two DVI ports. The user wants to connect two 1920x1080 monitors. Which combination of ports and cables will provide the best image quality and support for both monitors?

Accepted Answer

Use the HDMI port for one monitor and the DisplayPort for the other. HDMI and DisplayPort both support 1920x1080 at high quality and are digital, ensuring the best image. DVI is also digital but less common for modern monitors; using two digital connections is optimal.

Answer

Use the HDMI port for one monitor and a DVI port for the other

Answer

Use both DVI ports for the monitors

Answer

Use a DisplayPort splitter to run both monitors from the single DisplayPort

Question 14

A user reports that their laptop's built-in display shows distorted colors and horizontal lines, but when they connect an external monitor via VGA, the external display works perfectly. What is the most likely cause?

Accepted Answer

The laptop's LCD panel or its video cable is damaged. The internal display or its cable/connector is faulty because the external monitor works fine, ruling out the graphics adapter. This isolates the problem to the laptop's LCD panel or its connection.

Answer

The laptop's GPU is failing

Answer

The VGA cable is defective

Answer

The display driver is corrupt

Question 15

A technician is configuring a dual-monitor setup for a stock trader. The primary monitor is a 27-inch 1440p display connected via DisplayPort, and the secondary is a 24-inch 1080p display connected via HDMI. The user notices that windows dragged to the secondary monitor appear stretched. What is the most likely cause?

Accepted Answer

The secondary monitor's resolution is set to 1440p instead of 1080p. Mismatched resolutions cause scaling issues; the secondary monitor's native 1080p resolution should be set in display settings. Stretching occurs when the resolution is set incorrectly, not matching the monitor's native resolution.

Answer

The HDMI cable is not version 2.0 or higher

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The graphics card cannot support two different resolutions

Answer

The secondary monitor is set to extend mode instead of duplicate