The long awaited revision of Halsall's bestselling introduction to data communications, networks, and open systems. In addition to completely revising the material on networking, networking management, and open distributed processing, application protocols have been expanded to include MHS, X400, VT, EDI, and X500.

From the Back Cover

Drawing on his twenty years as a researcher and teacher, Fred Halsall presents the complex world of data communications and networks with clarity and thoroughness. An invaluable resource to both the student and the practicing computer professional, this fourth edition of the very successful Data Communications, Computer Networks and Open Systems has been extensively updated to reflect the rapid developments in this field.

Highlights of the book include detailed coverage of:

The essential theory associated with digital transmission
Digital leased circuits including PDH, SONET and SDH
Protocol basics including specification and implementation methods
Legacy and wireless LANs
High-speed LANs including 100BaseT and 100 VG AnyLAN
Transparent and source routing bridges
Packet switching and frame relay networks and their protocols
Internetworking architectures, protocols and routing algorithms
Multiservice broadband networks including ATM LANs and MANs
The TCP/IP and OSI application protocols including X.400 and X.500
Data encryption and network security algorithms
Network management architectures including SNMP and CMIP

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