Question

what is the primary advantage of using time division multiplexing (tdm) in t-carrier systems?

a it converts analog signals to digital signals.
b it encrypts data for secure transmission.
c it enables the simultaneous transmission of multiple signals over a single transmission path.
d it reduces the cost of internet services.

Explanation:

Define Time Division Multiplexing (TDM)

TDM is a communications process that transmits two or more digital signals over a single common channel by dividing the bandwidth into distinct, non-overlapping time slots allocated to each signal.

Analyze T-carrier systems integration

T-carrier systems (such as T1 lines) use TDM to combine multiple voice channels (typically 24 channels for T1) into a single high-speed digital stream, allowing them to share the same physical transmission medium simultaneously.

Evaluate the given options

• Option A describes analog-to-digital conversion (PCM), not multiplexing.
• Option B describes encryption, which is a security function.
• Option C describes the core purpose of TDM: enabling simultaneous transmission of multiple signals over a single path.
• Option D is a broad economic consequence, not the primary technical advantage.

Answer:

• (A) It converts analog signals to digital signals.
• (B) It encrypts data for secure transmission.
• (C) It enables the simultaneous transmission of multiple signals over a single transmission path. (Correct answer)
• (D) It reduces the cost of internet services.