Preparation for an examination that primarily tests the comprehensive understanding of various undergraduate subjects in engineering and science, demands extensive knowledge and revision of the concepts covered under the GATE 2016 curriculum. GATE is an all India examination administered and conducted jointly by the Indian Institute of Science and seven Indian Institutes of Technology on behalf of National Coordination Board GATE, Department of Higher Education, Ministry of Human Resource Development (MHRD), Government of India. GATE tests the in-depth knowledge and practical knowledge of varied concepts. We at Arihant understand the needs of the students which require comprehensive chapterwise study for in-depth understanding followed by thorough practice of the syllabi to master the concepts.The present book contains last 16 years (2000-2015) solved papers of GATE Computer Science & Information Technology. Solved papers help to familiarize the aspirants with the current trends of questions asked in GATE Computer Science & Information Technology Examination. A brief description about the syllabus is given in the beginning of each chapter which will help the students to know what topics the chapter covers. The book has been divided into 13 chapters namely Engineering Mathematics, Computer Architecture Organisation, Programming & Data Structure, Algorithm, Theory of Computation, Compiler Design, Operating System, Database, Digital Logic, Software Engineering, Computer Networks, Web Technologies and General Aptitude. The previous year questions divided into 1 Mark and 2 Marks Questions have been given chapterwise and yearwise with detailed solutions at the end of every chapter. Solution Points block is provided on each page so that the student can jot down the points to solve the problems. The book also contains three cracks papers which will help the candidates to analyze the level of preparation for the examination. The book also contains three Crack Papers designed on the lines of the previous years. GATE Computer Science & Information Technology Examination. The Crack Papers will help the aspirants revise and practice the concepts covered under the syllabi of GATE Computer Science & Information Technology Examination. Containing a large number of previous years questions, this is a must have book for preparation and success in the upcoming GATE Computer Science Information Technology Examination 2016.