Whichtwostatementsaretrueabouttime-divisionmultiplexing(TDM)?(Choosetwo.)TDMreliesonLayer3protocolstooperate.Multiplesourcescantransmitoverasinglechannel.Originaldatastreamsmustbereconstructedatthedestination.TDMmethodsvarydependingontheLayer2protocolthatisused.Itallows