WellDev Interview Question

1st Technical viva: Based on *Basic oop (four basic oop concepts and their usage ) *(Data structure(heap, queue, stack), *Algorithms (binary search, bfs, dfs), *Database (key, crud, joining, sql, nosql). 2nd Technical viva: Same as before + They share a doc where the problem had to be solved. Noted: ***It is important to be proficient in English