{HEAD ~ Network connectivity} is determined by {TAIL ~ a redundantly connected node} by testing connectivity between the nodes primary and backup physical network access points 
is determined by
{ HEAD ~ Network connectivity } is determined by { TAIL ~ a redundantly connected node } by testing connectivity between the nodes primary and backup physical network access points
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH