Computer Networking
MAC is

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

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Computer Networking
TCP is:

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

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