Book excerpt: In an effort to provide a clearer career path for IT professionals supporting Windows Server 2003, the Training & Certification team has made significant changes to the MCSA and MCSE programs. While still requiring candidates to pass four exams for the MCSA and seven exams for the MCSE, the new program is now a true two-tier structure that clearly differentiates between skills needed by administrators and support personnel, and higher-level planners and designers. This study guide is aimed at MCSA and MCSE candidates preparing for the Implementing, Managing, and Maintaining a Microsoft Windows Server 2003 Network Infrastructure exam (#70-291).