This exam applies only to those who’ve earned the Microsoft Certified Desktop Support Technician, or MCDST, credential for Windows XP who wish to upgrade their coverage to include Windows Vista. As such, it is probably of little interest to anyone except the nearly 50,000 individuals who have earned this credential according to Microsoft’s latest certification counts. Nevertheless, I include 70-621 here in the interests of complete coverage of MS Vista-related certification exams.
A quick visit to its exam page shows that it still adheres to the “old school” of layout and formatting, as opposed to others in this series (see 70-620, for example). My guess is that this is a deliberate decision on Microsoft’s part, because of the ceiling on the potential audience and the relatively short period of time that this upgrade will retain its appeal, with Windows 7 now very much in the offing, probably no further out than 2010. Then, too, the 70-621 counts only towards two certifications–namely MCTS Windows Vista Configuration and MCITP Enterprise Support Technician, which also limits the reach of this topic’s coverage and consequence. But 70-621 also satisfies the same requirements as 70-620 as well, so perhaps this exam is really just coat-tailing its immediate numerical predecessor.
this probably also explains why there’s some significant overlap between the content and coverage of 70-620 and 70-621. Recommended courses include 5119 Supporting the Windows Vista Operating System and Applications and 5118 Maintaining and Troubleshooting Windows Vista Computers. Corresponding e-learning offerings include Collection 5347 Installing and Configuring Windows Vista, Collection 5354: Configuring Windows Vista Networking and Security, and Collection 5360 Configuring Windows Vista Applications and Devices, though Collection 5103 Upgrade Skills to Configure Windows Vista may be of more interest and relevance to MCDST holders. Not surprisingly, the 70-620 and 70-622 Self-Paced Training Kits from MS Press are cited as the relevant prep books.
In fact, other than to point you at the Skills measured matrix on the 70-621 page, I’m going to punt here with the rest of this exam description and say: re-read 70-620 then go ahead to 70-622 (as soon as it’s available) to get the rest of the details. That’s because 70-621 is primarily a conflation of 70-620 and 70-622, though it does skip some basic details and information that already-experienced support personnel will already have mastered.