It is hardware, but it's also Windows. This certification is intended to prove that the holder is qualified to do help desk diagnostics as well as build desktop systems. It also covers printers, but just barely. The only networking it covers is setting up a NIC and cables. They intended for this cert to go along with their Net+ certification. The two together are suppose to prove the holders are capable for entry level network administrator duties. The Net+ test covers other operating Systems (I think, I took the prep class but not the test). Bart