There are 2 major platforms in typical organizations - The Client/Dekstop platform and the Server platform. Existing Client/Desktop platform is undoubtedly the widely used Windows 7. While a new shift of Client paradigm takes place via the introduction of the new Windows 8 which can run on both traditional desktop PCs as well as tablets and smart phones. This has certainly upgraded the landscape of Client/Desktop deployment of many organizations ranging from SMB (Small Medium Business) to large businesses around the world.
With this regard, knowledge Information Workers that work on Client/Desktop platform can opt from 3 major versions of Client/Desktop certifications - The MCITP: Enterprise Desktop Administrator on Windows 7 http://www.microsoft.com/learning/en/us/mcitp-certification.aspx certification, the MCSA: Windows 7 certification http://www.microsoft.com/learning/en/us/mcsa-windows-7-certification.aspx and the MCSA: Windows 8 http://www.microsoft.com/learning/en/us/mcsa-windows-8-certification.aspx certification.
The note that the MCSA: Windows 7 certification requires the passing of 2 exams - Exam 70-680 and Exam 70-685 which will also earn you an additional Windows 7 certifications, namely the MCITP: Enterprise Desktop Support Technician on Windows 7 http://www.microsoft.com/learning/en/us/mcitp-certification.aspx, where both exams combined (Exam 70-680 and Exam 70-685) actually fulfills 2 certification tracks requirements.
Skills measured in Exam 70-680 is here http://www.microsoft.com/learning/en/us/exam.aspx?ID=70-680 and its MOC (Microsoft Official Curriculum) topics are in here http://www.microsoft.com/learning/en/us/Course.aspx?ID=6292A&locale=en-us.
Skills measured in Exam 70-685 is here http://www.microsoft.com/learning/en/us/exam.aspx?ID=70-685 and its MOC (Microsoft Official Curriculum) topics are in here http://www.microsoft.com/learning/en/us/Course.aspx?ID=6293A&Locale=en-us
For its newer counterparts, name Windows 8, there is a new MCSA: Windows 8 certifications, which requires the completion of 2 Windows Client exams, namely Exam 70-687 and 70-688.
Skills measured in Exam 70-687 is here http://www.microsoft.com/learning/en/us/exam.aspx?ID=70-687 and its MOC topics are in here http://www.microsoft.com/learning/en/us/Course.aspx?ID=20687A&Locale=en-us.
Then the skills measured in Exam 70-688 is here http://www.microsoft.com/learning/en/us/exam.aspx?ID=70-688 with its MOC topics in here http://www.microsoft.com/learning/en/us/Course.aspx?ID=20688A&Locale=en-us.