Digital subscriber lines: a. are very-high-speed data lines typically leased from long-distance telephone companies. b. operate over existing telephone lines to carry voice, data, and video. have up to

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

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