An introduction to the field of computer networking and data communications for students who need to understand the larger picture of computer networks yet do not require extensive mathematical rigor and engineering detail. Part I introduces basic concepts and discusses analog and digital technologies, while Part II focuses on physical, data link, and network layer concepts. Parts II and III discuss specific networking technologies, services, and applications, and Part IV covers related networking issues such as network security, home and dial-up networking, and convergence technologies. Includes boxed readings of more in-depth material, and biographical sketches of key figures in the field. Annotation c. Book News, Inc., Portland, OR (booknews.com)