passwella.
Menu

WAEC Data Processing 2021 Question 28

Question 28

Computer Maintenance

The erratic movement of the mouse pointer is usually caused by

  1. A.damaged driver.
  2. B.dirty mouse ball.
  3. C.improper connection of mouse cable.
  4. D.outdated driver.
Show the answer and explanation

Answer: B (dirty mouse ball.)

Explanation

Dirt on the ball and rollers makes the pointer jump about.