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?

None of these
Teleconferencing
Telemeeting
Teletalking
Telemailing

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Computer Networking
TCP is:

Operates at the Data Link layer
Connection orientated and reliable
Connection orientated and unreliable
None of these
Connectionless and unreliable

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