Computer Networking
The dialogue techniques for terminal use do not include

menu display
None of these
open-ended questions
questions and answers
form fillings

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Computer Networking
X.21 is

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

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