Computer Networking
A front-end processor is

a user computer system
None of these
preliminary processor of batch jobs.
a minicomputer that relieves main-frame computers at a computer centre of communications control functions
a processor in a large-scale computer that executes operating system instructions

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

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