Multiplexing is a technique to transmit multiple signals across a single data link.
Answer must be D
Multiplexing can be of three types:
- Frequency-division multiplexing (FDM) : analog signal
- Wave-division multiplexing (WDM) : analog signal (used in optical fibers)
- Time-division multiplexing (TDM): digital signals
- In TDM, a single frame is made with interleaved digital signals from n devices. In TDM, the transmission rate of the multiplexed path is greater than the sum of the transmission rates of all sources.