The internet uses . . . . . . . . A. Telephone switching B. Circuit switching C. Packet switching D. Telex switching

Telex switching is a method of analog networking that was used for text communication before the advent of digital networks. Telex networks used a system of leased lines to connect telex machines. Each telex machine had a unique address, and messages were transmitted between machines using a series of tones. Telex switching is no longer used, but it was once the primary method of long-distance text communication.