Updated with the latest advances in the field, Jerry FitzGerald, Alan Dennis, and Alexandra Durcikova's 12th Edition of Business Data Communications and Networking, continues to provide the fundamental concepts and cutting-edge coverage of applications that students need to succeed in their careers. Authors FitzGerald, Dennis, and Durcikova have developed a foundation and balanced presentation from which new technologies and applications can be easily understood, evaluated, and compared.