We included a self-assessment in this Exam Cram 2 book to help you evaluate your readiness to tackle Microsoft certifications. It should also help you understand what you need to know to master the topic of this book ”namely, Exam 70-272: "Supporting Users and Troubleshooting Desktop Applications on a Microsoft Windows XP Operating System." Before you tackle this self-assessment, though, let's address concerns you might have when pursuing certification as a Microsoft Certified Desktop Support Technician (MCDST) on Windows XP and what an ideal MCDST candidate might look like.