Computer Networking
Error detection at a data link level is achieved by

equalization
None of these
cyclic redundancy codes
bit stuffing
Hamming codes

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Computer Networking
MAC is

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

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