When capitalized '''MAC''', it's probably
'''M'''edia '''A'''ccess '''C'''ontrol [http://www.instantweb.com/foldoc/foldoc.cgi?Media+Access+Control]
(as in ''MAC address'')
or
'''M'''andatory '''A'''ccess '''C'''ontrol [http://en.wikipedia.org/wiki/Mandatory_access_control],
a feature of [Multics] and some later operating systems.

When capitalized '''Mac''', it's probably short for [Macintosh].
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[Category Acronym] |
[Category Networking]
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