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Computer Networks
Multiplexing
Q
Which multiplexing technique used to transmit digital signals?
AA. Fdm
BB. Tdm
CC. Wdm
DD. Fdm & wdm
Correct Answer:
B. B. Tdm
Explanation:
TDM abbreviation for Time Division Multiplexing is a method used for digital signals. Whereas FDM and WDM abbreviation for Frequency Division Multiplexing, and Wavelength Division Multiplexing, are used for analog signals. TDM is used in applications like ISDN (Integrated Services Digital Network) and PSTN (Public Switched Telephone Network).