Jordan Novet / CNBC: Cisco reports Q3 revenue up 12% YoY to $15.84B, vs. $15.56B est., forecasts Q4 revenue above est., and is cutting almost 4,000 jobs; CSCO jumps 17%+ after hours — Cisco shares soared 15% in extended trading on Wednesday after the networking company issued results and guidance that topped Wall Street's projections.