The difference between a multiplexer and a statistical multiplexer is

A Statistical multiplexers need buffers while multiplexers do not need buffers
B Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
C Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
D Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
E None of the above

Correct Answer: Statistical multiplexers need buffers while multiplexers do not need buffers

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