Computer Networking
Terminals are required for

realtime, timesharing, and distributed processing
realtime, distributed processing, and manager inquiry
realtime, timesharing, and message switching
None of these
realtime, batch processing, and timesharing

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

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

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