This document discusses various network architectures and technologies. It describes Ethernet standards including 10Mbps, 100Mbps, Gigabit Ethernet and 10 Gigabit Ethernet. It also covers other architectures like Token Ring, AppleTalk, FDDI, broadband technologies, ISDN, DSL, wireless networks, ATM, SONET, and optical carriers. Key aspects like topology, media, access methods, speed and distance limitations are provided for many of the architectures.