Which of the following is typically used by small businesses as a remote backup system?

A.
Hot site

B.
Warm site

C.
Cold site

D.
All of the above

Explanation:
A cold site is not continuously connected to the primary server and usually only contain equipment for performing backup and restore functions, making it the ideal remote backup system for small companies.
Incorrect Answers:
A: A hot site is an active offsite storage backup facility that is continuously connected to the primary server, making it impractical for small businesses.
B: While a warm site not continuously connected to the primary server, it does have wide-area networking and other basic communications assets which is not usually required by smaller businesses.

D: A cold site is the correct answer.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 549-551.