Which of the following should NOT be used to remove dust and debris from between and under the keys of a server’s keyboard?

A.
Compressed air.

B.
Mini vacuum clean.

C.
Natural bristle brush.

D.
Foam based cleaners.

Explanation:
Foam based cleaners should be avoided when cleaning a server’s keyboard. Foaming substances can cause dirt particles to be deposited in the key switches.
Incorrect
Answers:
A, B, C: You can use either of the solutions mentioned in these options to remove dust and debris from between and under the keys of a server’s keyboard.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 453-454.