Computer Networking
With telecommunications and a personal computer you can

send letters to be printed and delivered by the post office
All of these
order goods at a substantial discount
None of these
"download" free public domain programs

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Computer Networking
The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

can receive and send data simultaneously
cannot talk at once
can do one way data transmission only
can send or receive data one at a time
None of these

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