Reflecting the advances made since the first edition was published, this new edition offers a succinct and concise tutorial on the major types of networks in use today. Each modular chapter provides a complete description of a major computer network technology, covering Frame Relay, SMDS, FDDI, and SONET technology. This volume will be a valuable working tool for computer programmers, project managers, team leaders, computer engineers, and anyone responsible for recommending, purchasing, installing, or maintaining computer network communications systems.