Computer Networking
If communication software can be called the "traffic cop" of a micro communication system, then what should the modem be called?

Link
Park
Bridge
Interface
None of these

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Computer Networking
HDLC (High-level Data Link Control) is

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

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