New York, April 17 (BridgeNews) - U.S. stocks ended higher as investors managed to brush off a profit warning from networking bellwether Cisco Systems Inc. (CSCO) and another round of layoff announcements. The Nasdaq closed up 13.58, or 0.71%, to 1923.16. The Dow closed up 58.30, or 0.57%, to 10,216.86 while the S&P 500 closed up 12.13, or 1.03%, to 1191.81.