COMPUTER NETWORKING

Detailed explanation-1: -Explanation: Multiplexing is a method using which one can send multiples signals through a shared medium at the same time. This helps in using less resources and thus saving the cost of sending messages. Explanation: Circuit switching is a switching method by which one can obtain a physical path between end points.

Detailed explanation-2: -Multiplexing is a process in which various data signals are integrated to give a single output. Demultiplexing is a process in which one input data signal is divided into various output signals. It takes various input signals and gives one output signal only.

Detailed explanation-3: -TDM and FDM are both multiplexing techniques. FDM is meant for analog signals, while TDM works well with both analog as well as digital signals. However, TDM is mostly used in digital communications only. In TDM, syncronization pulse is important; whereas in FDM, Guard Band is required.

Detailed explanation-4: -Multiplexing is achieved by using a device called Multiplexer (MUX) that combines n input lines to generate a single output line. Multiplexing follows many-to-one, i.e., n input lines and one output line. Demultiplexing is achieved by using a device called Demultiplexer (DEMUX) available at the receiving end.