CompTIA A+ 220-902 Question B-6

A technician opens a customer’s computer and sees large amounts of accumulated dust. Which of the following is the BEST method of removing the dust from the computer?

A. Use compressed air to free the dust from the components and remove it with an ESD vacuum.
B. Dampen an ESD cloth with denatured alcohol and use it to gently wipe the dust away.
C. Use a shop vacuum with enough power to ensure all dust has been removed.
D. Remove as much dust as possible by hand and use compressed air to blow the rest out.

Correct Answer: A