How does Windows File Protection(WFP) in windows XP work?

SOME SORT OF.It Security windows EXPERIENCE form viruses that dames impotent file.
B.Them prevents that replacement as well as removal regarding protected technique file.
D.It shield user files incase of any hard drive crash.
D.It allow to ideally protect your file as a result of password crass.

Hi,
House windows File Safety (WFP) puts a stop to programs by replacing vital Windows technique files.

Your WFP function provides safeguard for program files implementing two mechanisms.The very first mechanism runs from the background.This safeguard is brought on after WFP is provided with a directory change notification for just a file in a protected list.After WFP will get this notification, WFP decides which report was changed.If that file will be protected, WFP appearance up the actual file signature in a very catalog file to discover if the new file is the correct variation.If the file seriously isn’t the proper version, WFP replaces the revolutionary file while using file in the cache folder (if it truly is in your cache folder) or from your installation reference.WFP searches for the correct file from the following spots, in this specific order:

Your cache folder (by default, %systemroot%\system32\dllcache).
Your network put in path, when the system appeared to be installed using network installation.
Your Windows CD-ROM, when the system appeared to be installed through CD-ROM.

Please check this link for additional details

http://support.’microsoft’.com/kb/222193
thanx.