220-1101 Question 418
Single answerDisplay burn-inA receptionist reports that a conference room display shows a faint outline of a video conferencing toolbar and clock even after the application is closed. The image is most noticeable on solid-color backgrounds. The display is used all day to show the same dashboard and meeting controls. Which action is the BEST recommendation to reduce the likelihood of this issue recurring?
- A
Enable a screen saver or power management to blank the display when it is idle
- B
Increase the display brightness so the ghost image is less visible during normal use
- C
Replace the video cable because signal interference is causing image retention
- D
Raise the refresh rate to the maximum supported value to clear the stuck image
- E
Reinstall the graphics driver to reset the display panel's pixel mapping
Show answer and explanation
Correct answer: A
Explanation
The symptom described is consistent with display burn-in or image retention from leaving static interface elements on screen for extended periods. For A+ Core 1, the key practical takeaway is prevention: avoid showing the same image continuously by using screen savers, sleep timers, or rotating content. Lower brightness and varied content can also help reduce risk, but the best single recommendation in this scenario is to blank the display when idle. This aligns with common manufacturer guidance and general display best practices for public displays, kiosks, and conference room systems.
- A. Correct.
Correct. Display burn-in or persistent image retention is more likely when static content remains on screen for long periods. A standard preventive best practice is to use a screen saver, display sleep timer, or other power management setting so static images are not continuously shown. This is a practical recommendation in environments such as conference rooms, kiosks, and dashboards where the same interface may remain visible for hours.
- B. Incorrect.
Incorrect. Increasing brightness typically makes burn-in risk worse, not better, because higher luminance can increase panel wear, especially on emissive displays. It may make the issue less noticeable in some content temporarily, but it does not address the cause and is not a recommended preventive step.
- C. Incorrect.
Incorrect. A bad video cable can cause artifacts such as flickering, color distortion, intermittent signal loss, or noise, but it does not cause a persistent outline that remains after the content changes. The scenario describes static-image-related retention, not a transmission problem.
- D. Incorrect.
Incorrect. Refresh rate changes can affect motion smoothness and compatibility, but they do not correct burn-in caused by prolonged display of static elements. This option reflects a common misconception that all display issues are tied to refresh settings.
- E. Incorrect.
Incorrect. Graphics drivers can affect resolution, scaling, color profiles, and display detection, but they do not reverse physical panel wear or image retention caused by static content. Reinstalling the driver is not the best preventive action for this scenario.