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