CompTIA A+ Core 1 (220-1101) — Question 353

When a user touches or swipes across an external touch screen, the image flickers but no input is registered on the presentation laptop. A technician verifies that the external touch screen appears free from physical damage. Which of the following should the technician do next?

Answer options

• A. Reboot the LCD touch panel and laptop.
• B. Check the cables connecting to the laptop.
• C. Verify the correct input source is set on the laptop.
• D. Replace the laptop with a new device that is known to work.
• E. Inspect the LCD touch panel for dead pixels or burn-in.

Correct answer: B

Explanation

The correct answer is B because checking the cables is essential to ensure that there is a proper connection between the laptop and the external touch screen. If the cables are loose or damaged, it can lead to the symptoms described. Options A, C, D, and E are less likely to resolve the issue as they do not address the potential problem with the cable connections.