Computer Networking
A T-switch is used to

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

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Computer Networking
Bus is

a collection of interconnected functional units that provides a data communications service among stations attached to the network
a continuous frequency capable of being modulated or impressed with a second signal
one or more conductors that some as a common connection for a related group of devices
None of these
the condition when two or more stations attempt to use the same channel at the same time

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