The content of this book is highly useful for ESE- 2025 Prelims: Paper- 1: Information and communication Technologies (ICT). It covers the entire syllabus that a student appearing for Engineering Services examination needs. The theoretical part has been written in a lucid language for easy comprehension of the readers. Previous year's ESE questions with solutions and practice sets are provided after every unit. All in all, the entire book is very informative and relevant to examination.