What is the best defense against intruders who wants to crack your password?

A.
Get people to monitor your system.

B.
Get longer passwords with miscellaneous characters.

C.
Change the password regularly

D.
None of the above.

Explanation:
The best defense against cracking is to reset or change the password frequently.
Incorrect
Answers:
A, B: To get people to monitor the system or to make the password longer with miscellaneous characters, will not stop an intruder.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, p. 465.