Digital subscriber lines: are very-high-speed data lines typically leased from long-distance telephone companies. are assigned to every computer on the Internet. operate over existing telephone lines to carry voice, data, and video. have up to twenty-four 64-Kbps channels. operate over coaxial cable lines to deliver Internet access.

Operate over existing telephone lines to carry voice, data, and video.

Explanation:

Digital subscriber line is a means of transferring high bandwidth data over a telephone line. Such data could be a voice call, graphics or video conferencing. DSL uses a user's existing land lines in a subscriber's home, allowing users to talk on a telephone line while also being connected to the Internet. In most cases, the DSL speed is a function of the distance between a user and a central station. The closer the station, the better its connectivity.