This series will give you the study guide you need for the CompTIA A+ Essentials exam, which is the first of two exams now required to earn CompTIA A+ certification. This certification validates the knowledge and skills of entry-level computer service technicians. It is an international, vendor-neutral certification recognized by major hardware and software vendors, distributors and resellers. CompTIA A+ certification confirms a technician's ability to perform tasks such as installation, configuration, diagnosing, preventive maintenance and basic networking.