Implement stack using LinkedList (pseudo code) Reverse a LinkedList Find all the substrings of a given string Process vs thread What is Semaphore, mutex Round 2(1 hour): First, he asked about favorite subjects other than DS and ALGO. Be honest in this. ( I said OS) Difference between mutex and semaphore and why we need this. Can we make a shared variable among threads of the same process and different process? what is Dynamic linking Whats is Constructor and Destructor along with its code Why do we need Destructor? what is a memory leak? How do we manage two different processes? What is interprocess Synchornisation What is Functor in C++? No. of island Round 3(15 to 30 mins): It starts with an Introduction. Explain any of your best projects and what was your contribution (No cross-questions in terms of tech stack just HR-type questions like what was your experience and all. Why do you want to join Samsung? What is your area of interest?