You are a technician working at Certkiller .com. You have been called to examine a computer that
is unusually slow. You suspect that some or many of the files on the hard drive has been split and
written to multiple sections of a hard drive. Which of the following tools will rewrite the file to a
single section of the hard drive?

A.
System Restore

B.
FORMAT

C.
CHKDSK

D.
Disk Defragmenter

Explanation:
System Restore will restore a not working or badly working operating system to a previous state. It
will not help against fragmented files. Format will erase all files on the actual disk. You do not want
to try that one in this scenario. CHKDSKis a command in DOS and Microsoft Windows systems
which verifies a hard disk or a floppy disk for file system integrity.