CompTIA
220-801 · Question #402
220-801 Question #402: Real Exam Question with Answer & Explanation
The correct answer is B: Refresh rate. A monitor set to a low refresh rate causes perceptible screen flicker, which is a well-known cause of eye strain, headaches, and motion sickness symptoms.
Question
A user, Ann, is experiencing headaches and motion sickness symptoms when using her new computer monitor. Which of the following can a technician adjust to help Ann?
Options
- APrivacy filter
- BRefresh rate
- CUse a digital signal
- DBrightness
Explanation
A monitor set to a low refresh rate causes perceptible screen flicker, which is a well-known cause of eye strain, headaches, and motion sickness symptoms.
Common mistakes.
- A. A privacy filter reduces viewing angles and brightness but does not address flicker or motion perception issues that cause headaches.
- C. Switching to a digital signal (e.g., from VGA to HDMI/DisplayPort) improves signal quality but does not directly control the refresh rate causing the symptoms.
- D. Adjusting brightness affects eye fatigue from glare but does not address the flickering caused by a low refresh rate.
Concept tested. Monitor refresh rate and its effect on user health
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