COMPUTER NETWORKING

Detailed explanation-1: -To accommodate the successful transmission of multiple signals over a single line, FDM separates assigned bands by strips of unused frequencies called guard bands. This prevents overlapping between signal frequencies over a shared medium.

Detailed explanation-2: -A guard band is a narrow frequency range that separates two ranges of wider frequency. This ensures that simultaneously used communication channels do not experience interference, which would result in decreased quality for both transmissions. Guard bands are used in frequency division multiplexing (FDM).

Detailed explanation-3: -In telecommunications, frequency-division multiplexing (FDM) is a technique by which the total bandwidth available in a communication medium is divided into a series of non-overlapping frequency bands, each of which is used to carry a separate signal.

Detailed explanation-4: -In telecommunications and computer networking, multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium. The aim is to share a scarce resource-a physical transmission medium.