Computer Networking
Business meeting and conferences can be held by linking distantly located people through a computer network. Not only the participants exchange information but are able to see each other. What is it called?

Teletalking
Telemailing
None of these
Teleconferencing
Telemeeting

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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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