** Shares of Australian tech stocks .AXIJ rise as much as 2.5%, hitting their highest level since April 22
** Sub-index tracks U.S. stocks higher with the Nasdaq closing higher, boosted by robust earnings and a dip in crude prices .N
** ASX-listed Xero XRO.AX rise 3.4%, logging its best trading day since April 16
** Network as a Service (NaaS) provider Megaport MP1.AX gains as much as 2.1%
** AXIJ down over 16% this year, including the day's move
(Reporting by Rajasik Mukherjee in Bengaluru)
((Rajasik.Mukherjee@thomsonreuters.com))