Introduction to PC Local Network Technology: Observations, importance, major PC LAN pieces, distinguishing features, open or closed systems? Drawbacks, benefits, complexity, hazards, topologies, low-level protocols, vendor claims vs realities. Key PC LAN Standards and Protocols: IEEE 802, CSMA, token passing, datagrams & virtual circuits, IEEE 802.2, TCP / IP, XNS, NETBIOS. PC LAN Hardware: Bus structure objectives, media, network interface design trade offs, adapter intelligence, standard microsystems ARCNET device, token-ring implementations. PC LAN Software: Applications support, systems, ideal user interface, network operating systems and OS/2, concept and implementations. Other PC LAN Considerations: Documentation, problem determination, management software. Vendor products.