I was interviewed for SDE2 role.
The interviewer started asking about the current role, and what interesting stuff I am doing.
Couple of questions which I remember:

1. LCA for a Tree, asked optimization.

2. write a program to parse a path of folder such as :
   \aa.. => should return root
   \aa.... =>should return error
   \aa\bb..\cc => should return aa and cc

3. Asked to design a Parking Lot.

4. couple of questions on Design Pattens.

5. Asked to design a system, with hightly scalable Transactional DB
   Followup question, how to increase CPU throughput -Inter/IntraTransation Concurrency.