UGC NET Questions (Paper – 1)

Time Division Multiplexing allows several data streams to use the same physical channel by allocating distinct time intervals to each signal. During its time slot, each source transmits its data, and the slots repeat in a fixed sequence. This method is common in digital telecommunication systems where precise timing can be maintained. Therefore, the technique in the stem is time division multiplexing.

Option A:
Option A, frequency division multiple access, is related to dividing the spectrum into frequency bands rather than time slots and is associated with certain wireless systems.

Option B:
Option B is correct because the description of separate time slots for multiple signals is the defining feature of time division multiplexing as taught in ICT and networking courses.

Option C:
Option C, code division multiple access, spreads signals over a wide frequency band using unique codes and does not rely on simple time slot allocation.

Option D:
Option D, token passing, is a media access control method for determining which station may transmit at a given moment, not a multiplexing scheme for combining signals.