The book is a collection of 250 questions and answers, divided into four simulations of practice exams and an assessment test, which will help the reader in preparing the LPI 101 exam (Exam Code 101-500). Taking this exam is the first step to obtaining the LPIC-1 certification, the first certification in the multi-level Linux professional certification program developed by the Linux Professional Institute.¿The 250 questions are not the original questions of the exam, but they have been thought as useful exercises to focus on the main topics, reinforce what you learned, improve your Linux skills and test your knowledge before taking the real exam. Each question is explained adequately, providing not only the correct answer, but also the general background to which the question refers.