Everything from the internship project, what I did in internship, (what is electro migration, how the EM interpolation is done, which tools used?) some basic VLSI questions like what is setup, hold time, will hold time depend on frequency, techniques to reduce leakage in CMOS; what is DRC, LVS, why we should do it, what are the parameters that would be checked while performing LVS, purpose of shebang line in any script, stack vs queue in C language, how to size the pMOS & nMOS in inverter, logical effort definition,