A technician suspects that a recent virus they removed may have corrupted a necessary
system file. Which of the following utilities can the technician use to verify the integrity of
these critical files?

A.
msconfig

B.
sfc

C.
regsrv32

D.
fixmbr

Explanation:

Reference:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/enus/system_file_checker.mspx?mfr=true