Open systems interconnection -- Guide to digital communications -- Implementing TCP/IP in an SNA environment -- Integrated services digital network -- An overview of the synchronous optical network -- X.25 and worldwide networking -- Metropolitan area networks -- An overview of the switched multimegabit data service -- Ethernet/802.3 and token ring/802.5 -- Local area network cabling considerations -- Disaster recovery planning for local area networks -- Selecting a tape backup system -- Electronic messaging -- Workgroup applications.