Book excerpt: Top 50 Operating System Interview Questions This book contains Operating System interview questions that an interviewer asks. It is a compilation of easy to advanced Operating System interview questions after attending dozens of technical interviews in top-notch companies like- Oracle, Cisco, IBM, etc. Each question is accompanied with an answer so that you can prepare for job interview in short time. Often, these questions and concepts are used in our daily programming work. But these are most helpful when an Interviewer is trying to test your deep knowledge of Operating System concepts. How will this book help me? By reading this book, you do not have to spend time searching the Internet for Operating System interview questions. We have already compiled the list of the most popular and the latest Operating System Interview questions. Are there answers in this book? Yes, in this book each question is followed by an answer. So you can save time in interview preparation. What is the best way of reading this book? You have to first do a slow reading of all the questions in this book. Once you go through them in the first pass, mark the questions that you could not answer by yourself. Then, in second pass go through only the difficult questions. After going through this book 2-3 times, you will be well prepared to face a technical interview for Software Engineer position in Operating System. What is the level of questions in this book? This book contains questions that are good for a Associate Software engineer to a Principal Software engineer. The difficulty level of question varies in the book from a Fresher to an Experienced professional. What are the sample questions in this book? What is a Real time system? What is Virtual memory in OS? What is multi processing in OS? What is a Time sharing system? What is a Thread in OS? What are the advantages of multi-threaded programming? What is FCFS in OS? What is Round Robin scheduling algorithm in OS? What is a Deadlock in OS? What are the necessary conditions for Deadlock to occur? What is Banker