Which type of DSL attains downstream and upstream speeds of 1.544 Mbps over two copper twisted pairs?
A.
HDSL
B.
SDSL
C.
ADSL
D.
VDSL
Explanation:
High-rate digital subscriber line (HDSL) delivers 1.544 Mbps of
bandwidth each way over two copper twisted pairs. SDSL also delivers 1.544 Mbps but
over a single copper twisted pair. ADSL and VDSL offer a higher bandwidth downstream
than upstream.
I choose A
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A
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