which of the following types of multiplexing is least efficient for data transmission?
a. frequency division of multiplexing
b. statistical time division multiplexing
c. time division multiplexing
d. dense wave division multiplexing
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which of the following types of multiplexing is least efficient for data transmission?
a. frequency division of multiplexing
b. statistical time division multiplexing
c. time division multiplexing
d. dense wave division multiplexing