Computer Networking
A T-switch is used to

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

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Computer Networking
MAC is

network access standard for connecting stations to a circuit-switched network
a very common bit-oriented data link protocol issued to ISO.
None of these
a method of determining which device has access to the transmission medium at any time
a method access control technique or multiple-access transmission media

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Computer Networking
The packets switching concept was first proposed

in the early 1960s for military communication systems, mainly to handle speech
in the late 1950s for Defense Ministry of US
None of these
in the late 1980s for the Defense Ministry of US.
All of these

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