V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ARCNET
       Attached Resource Computer NETwork (Datapoint), "ARCnet"


The Free On-line Dictionary of Computing (30 December 2018):

ARCnet

    A network developed by DataPoint.  ARCnet was
   proprietary until the late 1980s and had about as large a
   marketshare as Ethernet among small businesses.  It was
   almost as fast and was considerably cheaper at the time.

   (1995-01-16)