** Shares of IT firm Knosys KNO.AX rise as much as 4.7% to A$0.045, highest level since Oct. 31
** Co says telecom co Optus signs additional 1-year contract extension, with the option for a further 1 year for continued use of co's knowledge management platform, KnowledgeIQ
** Value of contract extension (including one year option) has potential to exceed A$2.4 mln ($1.54 mln), co says
** Stock set for seventh straight session of gains
** KNO up 38.5% YTD as of 1246 GMT
($1 = 1.5615 Australian dollars)
(Reporting by Adwitiya Srivastava in Bengaluru)
((Adwitiya.Srivastava@thomsonreuters.com;))
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