Hi Nagesh
There is a saying "beggers cannot be choosers" and this typically applies to trainees.
When you go to look for a job you will be competing against others with experience. I would take any job your an get you hands on. Support work for Basis would be excellent to appreciate all the complexities for system administration. Support a Production Environment is quite different to project systems (performance tuning due to data volumes, criticality of system issues, batch job monitoring and interface monitoring, etc)
But again, take any job opportunity you can get your hands on. No matter what you will still continue to learn and obtain valuable experience.
Good luck
Regards
Colleen