The fourth edition of this very successful book continues to provide a comprehensive and solid introduction to data communications and computer networks. Fully revised and updated, it includes chapters on broadband multi-service networks (Broadband ISNs), a revamped chapter with extended and updated coverage of FDDI, and a new section on Fast Ethernet, covering 100Base T, 100Base X, wireless LANs, and several additional candidate technologies. Halsall provides a complete description of the protocols in both the TCP/IP and OS suites. Extensive use of diagrams throughout helps explain and clarify the subjects discussed