This book explores the design principles found in modem operating systems. It is intended for those wishing to learn more about operating systems in general or for those with interest in a particular system who desire a broader perspective on its operation. As in all Schaum's Outline Series book, each chapter includes a concise presentation of the material and numerous solved problems.The book is suitable for use as a companion to a standard operating systems text as a supplement to a course, or as a review guide for students preparing for graduate entrance or comprehensive exams.