Some questions on the exam might not be included in the calculation of your score. To gather data to update and improve the quality of Microsoft Certification exams, we need to present new content to candidates without counting the results toward their score.
All Microsoft exams are scaled such that the passing score is 700. The actual cut score (the number of items you need to answer correctly) is determined by a group of subject-matter experts. A common misperception is that you must answer 70 percent of the
items correctly in order to pass the exam; however, the actual percentage varies from exam to exam and may be more or less than 70 percent, depending on the input provided by the subject-matter experts who helped us set the cut score. After you complete your
exam, the points you earned are compared with the cut score to determine whether the result is pass or fail. Prometric's software generates the scaled score and bars shown on your score report from scoring information provided by Microsoft.
Read more here:
http://www.microsoft.com/learning/en/in/certification/exam-prep.aspx#tab3
