TATA ELXSI Interview Question

Very basic question in Embedded domain,specially implement in practical life. there were 4 round. 1st written Round - NO aptitude most of question about hardware/Micro-controller family an C. 2nd technical Round - Basic question on Embedded Devices, C,C++. 2nd HR- Nothing Special. 4th Final Roung :- About Device Driver, Academic Project, Some Theoretical question . Sorting Programs in C.