LONDON (Reuters) - A rise in U.S. Treasury yields to their highest levels since mid-2011 pulled global bond yields higher across the board and boosted the dollar on Thursday, while stocks sagged in response. Visitors are seen as market prices are reflected in a glass window at the Tokyo Stock Exchange (TSE) in Tokyo, Japan, October 1, 2018. REUTERS/Toru Hanai An influential survey of the U.S. services sector showed activity at its strongest since August 1997, sparking speculation on the payrolls report on Friday could also surprise.