A comprehensive reference for networking professionals, providing detailed explanations of all the dominant upper- and lower-layer networking protocols currently on the market. It discusses such upper-layer protocols as SNA, TCP/IP, Appletalk, APPN, OSI, DECnet, and NetWare, and such lower-layer protocols as ATM, ESCON, ETHERNET, FDDI, Frame Relay, and X.25. In addition, it covers the fundamentals of networking and includes a glossary of terms, a list of acronyms and abbreviations, and a list of trademarks used in the field. Annotation copyright Book News, Inc. Portland, Or.