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 method access control technique for multiple-access transmission media
None of these
a very common bit-oriented data link protocol issued by ISO.
network access standard for connecting stations to a circuit-switched network

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Computer Networking
Terminals are used to

collect data from the physical system
All of these
provide information for the manager
None of these
communicate management decisions to the physical system

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