A+ is a certification program sponsored by the Computing Technology Industry Association (CompTIA) that certifies the competency of computer service technicians. CompTIA is an independent organization supported by major computer hardware and software vendors, distributors, resellers, and publications. To become A+ certified, a candidate must pass two test modules: the Core module, and either a DOS/Windows or Mac module. The two-part exam covers hardware and software technologies and is not related to any vendor-specific products.