Practice Quiz

CompTIA A+ 220-801

Category - 801: Procedures

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An employee in the maintenance department says her old CRT monitor has a distorted image. You visit her station and find the image on her monitor is jittery and distorted. You also notice a number of electric components and motors on her desk. What could be causing the distorted images?
  1. The RFI from the microwave in the nearby lunchroom
  2. Magnetic interference from the electric motors
  3. EMI from the building power system
  4. The monitor is just old and needs to be replaced.
Explanation
Answer: B - Magnetic interference in an electric motor that is too close to the monitor is probably the cause of the distortion.

Key Takeaway: Electric motors can contain magnets, and it is likely that a magnet in a motor sitting next to a user’s monitor will cause a distortion. Simply move the motors away from the monitor to see if it removes the distortion.
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