220-1101 · Question #47
Joe, a user, recently installed a new mouse for his laptop. Joe no longer uses a mouse pad because his office desk has a glass top. Joe notices that when he is at the office, the cursor moves on the s
The correct answer is D. The surface is too reflective. Optical and laser mice rely on non-reflective surfaces to track movement accurately; a glass top, being highly reflective, causes erratic cursor behavior.
Question
Joe, a user, recently installed a new mouse for his laptop. Joe no longer uses a mouse pad because his office desk has a glass top. Joe notices that when he is at the office, the cursor moves on the screen when he does not move the mouse; however, it works fine when he is traveling. Which of the following is MOST likely cause?
Options
- AThe device drivers are outdated
- BBluetooth is disabled
- CThe mouse is faulty
- DThe surface is too reflective
How the community answered
(27 responses)- A7% (2)
- B4% (1)
- C4% (1)
- D85% (23)
Why each option
Optical and laser mice rely on non-reflective surfaces to track movement accurately; a glass top, being highly reflective, causes erratic cursor behavior.
Outdated device drivers would likely cause consistent issues regardless of the surface, not just on a glass top at the office.
If Bluetooth were disabled, the mouse would not work at all, neither at the office nor while traveling.
A faulty mouse would exhibit issues consistently across different surfaces, not specifically on a glass desk while working fine elsewhere.
Optical and laser mice use an LED or laser to illuminate the surface and a sensor to detect movement by capturing images of the surface texture. Highly reflective surfaces like glass can interfere with this tracking mechanism, causing the mouse sensor to receive inconsistent data, leading to erratic or unintended cursor movement.
Concept tested: Mouse functionality and surface reflectivity
Topics
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