Which of the following technologies provides the bandwidth that is equivalent to a T-1 line?

A.
ADSL

B.
HDSL

C.
IDSL

D.
DSL

Explanation:
HDSL (High bit rate Digital Subscriber Line) provides T-1 (1.544 Mbps)
speeds over regular copper phone wire without the use of repeaters. Requires two
twisted pairs of wires, which many voice grade UTP lines do not have.