In order to receive CompTIA A+ certification a candidate must pass two exams. The first exam is CompTIA A+ Essentials. The CompTIA A+ Essentials Examination measures necessary competencies for an entry-level IT professional with the equivalent knowledge of at least 500 hours of hands-on experience in the lab or field. Hands-on experience or equivalent knowledge includes installing, building, upgrading, repairing, configuring, troubleshooting, optimizing, diagnosing, and performing preventive maintenance of basic personal computer hardware and operating systems.