passwella.
Menu

WAEC Data Processing 2025 Question 27

Question 27

Computer Maintenance

The erratic movement of the mouse pointer is usually caused by

  1. A.bad connection.
  2. B.dirty mouse ball.
  3. C.driver error.
  4. D.hardware failure.
Show the answer and explanation

Answer: B (dirty mouse ball.)

Explanation

Dirt on the ball and rollers makes the pointer jump.