YOE: 3+ years
Education: B.Tech in CS Tier 1

Round1: Coding & basic questions
1.Decode a string recursively encoded as count followed by substring
Input : str[] = "2[a2[b]]"
Output : abbabb
2. What is the difference between process and thread.
3.Difference between isEquals() and '==' in Java?

Round2: Coding & OS related questions

1. Working of a thread in one core machine?
2. Difference and working of Semaphore & mutex?
3. What happens to child thread forked out of parent when the parent thread dies ?
4. Properties of BST and working code of insertion in a BST?
5. Insertion in a Treap Data Structure(was unable to give the answer to this question.)

After the second round received a feedback that I was rejected and they cannot proceed any further.