Tech: He asked me about my favorite subject I answered him DSA, OS and DBMS then he asked practical implementation of stack, instantly LRU( least recently used) clicked in my mind, so by LRU I linked LRU with many OS concept like why LRU ,paging ,cache , tlb and many more concepts of memory utilization part of OS. He was quite impressed. Second question how would you detect linked list is circular and he extended this question to remove linked list and write code for it. Easy gfg question I explained both the approaches by hashing and without hashing . Then I extended this question by giving practical implementation why linked list ,having circle is used and discussion goes on to trie and doubly linked list data structure. Third question was of dbms and he asked about referential integrity I was blank about this word then he asked to design a database (used join and foreign key concept) and optimize this database , I answered this by normalization, explained definition and why 1st 2nd and 3rd normalization are used in practical purpose. on the basis of final database he asked 2-3 sql queries above questions went on for around 40-50 minute, I think he was completely satisfied with my technical knowledge that’s why he didn’t ask any puzzle(common in sapient) and just asked 2 non verbal reasoning question and it was quite easy and seemed just a formality. HR:He asked question about my project and some basic question, weakness ,strength ,why low cgpa, how do you face your problems and how you try to handle it ,and some general discussion. Seemed like a formality.