Computer Networking
A T-switch is used to

rearrange the connections between computing equipment
echo every character that is received
control how messages are passed between computers
None of these
transmit characters one at a time

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Computer Networking
A front-end processor is

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

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