What technology does Digital Subscriber Line (DSL) use for data transmission?

Digital Subscriber Line (DSL) utilizes broadband modem technology to transmit data over traditional telephone lines. This is achieved by splitting the frequency of the line, allowing both voice and data to be transmitted simultaneously without interference. DSL modems modulate and demodulate the signals between the digital data of your computer and the analog signals used by the telephone line, enabling high-speed internet access while still allowing for regular phone calls to occur.

The other options represent different technologies that do not apply specifically to DSL. Fiber-optic cables, for instance, use light to transmit data and are not part of the DSL technology. Satellite communication involves satellites to connect devices but operates independently from DSL. Similarly, wireless networks use radio waves for data transmission and also do not utilize the telephone lines that are central to how DSL functions.