Re: interview question
To Some extent its possible. Thats called Reverse Enginering.
Its difficult task.. For your interview , Answer is yes. Specification consists of PVT and electrical charactristics ,how speed your design works and etc. You need to extrapolate/interpolate your design results at differnt conditions to get the brief idea about all these. The spec you get in reverst enginering is not accurate. Basically , He is checking, how you handle such Questions.
Best of Questions.
Regards,
Sam