A+ certifies the competency of service technicians in the computer industry. A+ candidates must pass two exams - a core exam on basic PC hardware and architecture, and an operating system exam. The latter includes coverage of Windows 2000 and Linux. An updated edition of Sybex"s lab manual for the A+ certification, this student workbook provides a full set of lab exercises to accompany the "A+ Complete Study Guide, 2nd Ed". It covers both the core and the operating system exams.