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T1 lines:

A) operate over existing telephone lines to carry voice, data, and video.

B) operate over coaxial lines to deliver Internet access.

C) have up to twenty-four 64-Kbps channels.

D) do not provide guaranteed service levels, but simply "best effort."

E) are high-speed, leased data lines providing guaranteed service levels.

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T1 lines:

A) operate over existing telephone lines to carry voice, data, and video.
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