Edited sentence: DConE approaches back-off in a similar fashin to Carrier_sense_multiple_access_with_collision_detection.DconE allows multiple proposers to progress at the same time rather than waiting for agreement from all nodes for each proposal.Singleton Quorum - Only one node has to respond to proposals.The Paxos Algorithm only caters for handling one proposal at a time.This is rarely used as it is inherently inefficient.This would normally be set as the busiest node and is often used where only two nodes exist.Unanimous Quorum - All nodes must respond.Within the quorum configuration a distinguished node can also be defined to tie-break a majority quorum (or in the case of a singleton quorum to act as primary)