Computer Aptitude for Competitive Examinations is designed to help students appearing for competitive exams such as those conducted by Banking, SSC, Railways, Police and various other selection boards at the national and state levels. It is also a handy guide to prepare for campus recruitment interviews that focus on general computer awareness. The book comprises 12 chapters and has 9 solved papers that cover a wide range of topics from the basic input–output systems to the advanced concepts of IoT, Big Data, AI and data warehousing. Amply supported by illustrative diagrams, keywords and topic highlights, the book is ideal for both students and casual readers alike.