This book gives a clear conceptual understanding of IT concepts and, to help students, an easy to follow visual style for the practical usage of various packages has been followed. Basically, if the reader follows this book in a sequential manner, s/he would have covered the entire syllabi of these papers. In order to make the book more useful for the students a summary of key points and sample questions have been included at the end of every chapter. For the more interested and committed, additional ‘Do-ityourself’ exercises have been given at the end of the relevant chapters. Further, a glossary will help as a ready reckoner on key IT terms and concepts, and should be especially useful on the day before exams!