i want to go hardware & networking engineering course, is it good future?

HI Mohan, You can go for CCNA or MCSE course. CCNA(Cisco Certified Network Associate) is for for the servers running on Solaris and Linix OS, whereas MCSE(Microsoft Certified System Engineering) is for Servers based on Microsoft OS. CCNA has wide scope than MCSE. The exams of both of them you can a

yes it is good.

ya it have good future you can do any certifcation like CCNA

Yes, as there is great demand for hardware technician You can go for MCSE, CCNA, N+ and A+ like certification for better prospects