Computer Networking
We can receive data either through our television aerial or down our telephone lines and display this data on our television screen. What is the general name given to this process?

Telesoftware
Viewdata
Videotex
None of these
Teletext

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Computer Networking
The difference between a multiplexer and a statistical multiplexer is

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

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