broadband and baseband
There are two different techniques that may be used to transmit the signal along the
network wire—baseband communication and broadband communication. Let's take
a look at each of these techniques.
n Baseband Sends digital signals through the media as a single channel that
uses the entire bandwidth of the media. The signal is delivered as a pulse of
electricity or light, depending on the type of cabling being used. Baseband
communication is also bidirectional, which means that the same channel can
be used to send and receive signals.
n Broadband Sends information in the form of an analog signal, which flows
as electromagnetic waves or optical waves. Each transmission is assigned
to a portion of the bandwidth, so unlike with baseband communication, it
is possible to have multiple transmissions at the same time, with each
transmission being assigned its own channel or frequency. Broadband
communication is unidirectional, so in order to send and receive, two
pathways will need to be used. This can be accomplished either by assigning a
frequency for sending and assigning a frequency for receiving along the same
cable or by using two cables, one for sending and one for receiving