You are working as a technician at Domain.com. A user calls and asks for help with his workstation. The computer is running Windows XP Professional and seems to have become unstable lately. Which of the following should be used to check the operating system integrity?

A.
SFC /SCANNOW

B.
Dr. Watson

C.
SFC /SCAN

D.
SFC /

Explanation:
System File Checker(SFC) is a utility in Microsoft Windows that allows users to scan for and restore corruptions in Windows system files. This utility is available on Windows 98, Windows 2000, Windows XP, Windows Server 2003, Windows Vista and Windows Server 2008. System File Checker can be invoked with the following command: SFC.EXE /SCANNOW