Which of the following use baseband transmission?
A.
CATV
B.
Ethernet
C.
Cable modem
D.
ADSL
Explanation:
Ethernet is a baseband transmission method that requires a direct
current be applied to the wire, high voltages representing a 1 bit and low voltage
loads representing a 0 bit. This differs from broadband, the method that the other
possible choices use. Broadband method allows multiple channels on the same medium,
which in turn allows for multiple simultaneous data