UGC NET Questions (Paper – 1)

Frequency Division Multiplexing divides the channel into multiple narrower frequency ranges, each allocated to a separate signal. This allows several users or data streams to share the same medium at the same time without interfering, provided the bands are carefully separated. It has been widely used in radio, television and older telephone systems. Hence, the technique described in the stem is frequency division multiplexing.

Option A:
Option A is correct because it explicitly states the idea of dividing available bandwidth into frequency bands, which exactly matches the definition of frequency division multiplexing.

Option B:
Option B, time division switching, suggests allocating different time slots rather than frequency bands and relates more to time based sharing.

Option C:
Option C, packet switching, involves breaking data into packets and routing them independently over digital networks, which is conceptually different from analog frequency sharing.

Option D:
Option D, encapsulation, refers to the process of wrapping data with protocol information as it moves down the layers of a protocol stack and does not involve dividing bandwidth.