DOS & HARD 2000 - Version 1.0 A set of exams for you test your knowledge in DOS and Hardware. It consists in 20 units and each unit in five exams. Each exam has 20 questions, totalling 2000 questions. You can choose a time for you make each test (can be 5, 10, 15 or 20 minutes). When you finish each test you have a summary to inform your performance, and if you wish, you can print it. DOS & HARD 2000 covers all you need to know more about DOS commands, such as: copy files and disks, format disks, understand about memories, etc.), and know all parts of your computer.