The data transmission method in which data is sent continuously and
doesn’t use either an internal clocking source or start/stop bits for
timing is known as:
A.
Asynchronous
B.
Pleisiochronous
C.
Synchronous
D.
Isochronous
Explanation:
Isochronous data is synchronous data transmitting without a
clocking source, with the bits sent continuously and no start or stop
bits. All bits are of equal importance and are anticipated to occur at
regular time intervals.
* asynchronous, is a data transmission method using a start bit at the beginning of the data value,
and a stop bit at the end of the value.
* synchronous, is a messageframed transmission method that uses clocking pulses to match the
speed of the data transmission.
* pleisiochronous, is a transmission method that uses more than one timing source, sometimes
running at different speeds. This method may require master and
slave clock devices. Source: Communications Systems and Networks by
Ray Horak (M&T Books, 2000).