The 27-19 bonus-point win was just what was required from Ulster A's first game in their back-to-back meetings with the Scarlets Premiership Select and it keeps Alex Codling's men in the hunt for qualification in Pool Two of the British and Irish Cup.
Ulster A now sit in second - on the basis of a healthier points differential than Bedford Blues - and are one point behind leaders Bristol, who trounced the Blues 52-3 on Friday night.
Saturday's visit to the Parc y Scarlets yielded the maximum return for Ulster A and brought them a second win from three games, their four tries coming courtesy of a brace from Ruaidhri Murphy and one each via skipper Willie Faloon (above) and John Andrew.
The result saw the Scarlets Select succumb to their third straight defeat and Codling will be aiming for another five points on Saturday when the sides meet again at Eaton Park.
Ulster took an early lead from a Sam Windsor penalty and Faloon got over for an unconverted score from the back of a maul before a try and conversion from Scarlets narrowed Ulster's lead.
But Ulster went in at half-time leading 15-7 with Andrew's try and Windsor's conversion.
Murphy's first touchdown made it 20-7 to the visitors and though the Scarlets came back with another try, Ulster made sure of the result with Murphy's second which was converted by Windsor.
Though the Scarlets managed a third try, which was converted, they failed to bag a losing bonus.