Is there a site or a way I can have free trial practice exams for the MOUS XP?
You'll also find lots of useful pointers to practice question information in this CertCities article, but not much MOUS stuff there, alas.
The Office 2002/XP exams are pretty new, however, so all I can suggest is that you get in the habit of using your favorite search engine(s) on a regular basis and use "free MOUS practice exam" or "MOUS practice exam" as your search string. There do appear to be plenty of commercial products available for these exams for a fee, however. Here again, a search engine can help you identify your options.
This was first published in July 2002