This document discusses different types of internet connections including wired connections like analog, ISDN, DSL, cable and T-carriers as well as wireless connections like satellite, USB, 3G and 4G. It provides details on the data transfer speeds and applications of each connection type. For example, it states that DSL uses telephone lines to provide speeds from 384KB/s to 20MB/s while cable provides speeds from 512 kbps to 20Mbps. The document also discusses technologies behind 3G and 4G wireless connections.