Which multiplexing technique divides the available bandwidth into fixed-size time slots?
- AOption (a)
Wave length Division Multiplexing (WDM)
- BOption (b)
Code Division Multiplexing (CDM)
- COption (c)
Time Division Multiplexing (TDM)
- DOption (d)
Frequency Division Multiplexing (FDM)
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Correct answer
Time Division Multiplexing (TDM)
Why this answer is correct
The Correct answer is Time Division Multiplexing (TDM).
Key Points
- Time Division Multiplexing (TDM) is a technique that divides bandwidth into fixed time slots, allowing multiple data streams to share a single channel.
- Time Slots: Each source transmits data in its designated slot.
- Synchronization: Ensures accurate time slot allocation between sender and receiver.
- Applications: Widely used in telephony to transmit multiple voice calls over one line.
Additional Information
- Multiplexing is a technique that allows multiple signals from different sources to share a single communication channel, optimizing bandwidth utilization.
Frequency Division Multiplexing (FDM)
- Divides the bandwidth of a communication medium into multiple frequency channels.
- Used in radio and television transmission.
- Requires guard bands to prevent inter-channel cross-talk.
Time Division Multiplexing (TDM):
- Allocates time slots to different data streams instead of dividing bandwidth.
- Used in digital communication systems.
- Types of TDM:
- Synchronous TDM: Assigns fixed slots, leading to inefficiency if no data is available.
- Statistical (Asynchronous) TDM: Dynamically allocates slots, improving bandwidth efficiency.
Wavelength Division Multiplexing (WDM):
- Enhances optical fiber capacity by transmitting multiple signals at different wavelengths.
- Used in telecommunications, ISPs, and data centers.
- Types of WDM:
- Dense WDM (DWDM): Supports up to 80 channels with narrow wavelength spacing.
- Coarse WDM (CWDM): Supports up to 18 channels with wider wavelength spacing.