Which multiplexing technique shares a transmission medium by assigning different frequency bands to signals?

Prepare for the Telecom Room Cross-Connection Facility Test. Utilize flashcards and multiple choice questions, complete with hints and elucidations. Gear up for your assessment!

The concept being tested is how a single transmission medium can carry multiple signals by dividing its available bandwidth into separate, non-overlapping frequency ranges. This approach, Frequency Division Multiplexing, works by allocating each channel its own slice of the spectrum. Each signal is modulated to fit within its assigned frequency band, and at the receiving end a filter isolates that band so the signal can be demodulated. This allows many conversations or data streams to share one wire or fiber simultaneously without interfering with each other.

Pulse Code Modulation is about converting analog signals into a digital bit stream, not about sharing a medium. A Balun is a device that converts between balanced and unbalanced signals, not a multiplexing scheme. Wavelength (or Wave) Division Multiplexing uses different wavelengths of light to carry channels, which is a related idea in optical communications, but it’s typically described in terms of wavelengths rather than generic frequency bands. Since the question emphasizes distinct frequency bands, the best match is Frequency Division Multiplexing.