For undergraduate, graduate, or MBA-level courses in Business Data Communications, Introduction to Data Communications, Telecommunications, and Introduction to Networking. This book has 11 core chapters that form a complete introduction to networking. Mini chapters follow 4 of the chapters (ch. 1, 3, and 8, and 9) with case studies or hands-on exercises reinforcing material in the previous core chapter. In addition, three advanced modules at the end of the book (Module A, B, and C) contain material teachers may wish to cover selectively for emphasis.