* Jobless claims fall to a 10-month low

* Non-farm productivity rises at fastest pace in 6 years

* Cisco leads gains in tech shares after results

* Dow up 1.8 pct, S&P up 1.5 pct, Nasdaq up 2.2 pct

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By Angela Moon

NEW YORK, Nov 5 (Reuters) - U.S. stocks gained sharply on Thursday after an expansion in business productivity and a fall in jobless claims boosted investor confidence about the economy, while Cisco led gains in tech shares.

U.S. non-farm productivity rose more than expected in the third quarter as companies squeezed more output from a smaller pool of labor, while fewer U.S. workers filed new jobless insurance claims than forecast last week -- hitting a 10-month low. [ID:nN05106320]