Tech rally, Ukraine deal boost Wall Street

By Ryan Vlastelica NEW YORK (Reuters) - U.S. stocks advanced broadly on Thursday, with a rally in technology stocks leading the Nasdaq to a 15-year high, helping to offset the impact of some tepid economic data. Sentiment was also boosted by a ceasefire agreement between Russia and Ukraine, which soothed concerns that tensions in the region would prove a further drag on Europe's economy. The S&P information technology sector rose 1.4 percent in its third straight daily advance. Cisco Sy