Computer Networking
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?

Paperless office
Global network
Electronic mail
Electronic newspaper
None of these

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Computer Networking
Synchronous protocols

None of these
are more reliable
allow faster transmission than asynchronous protocols do
are generally used by personal computers
transmit characters one at a time

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