Key TakeawaysShares in Cisco Systems jumped ahead of Thursday’s opening bell after the technology and networking company released earnings that topped Wall Street’s estimates and announced that it’s cutting 7% of its global workforce.The share price broke below the neckline of a head and shoulders pattern earlier this month, but lackluster trading volumes indicate a lack of conviction behind the move.Cisco shares could run into overhead resistance at key chart levels including $48.50,$50, $52.50, and$58. ...