Ducen Project Trainee/Job for Freshers interview questions

They asked about my projects, some logical questions and give me some problems to solve(Fibonacci series, Tribonacci series, implementation of stack and queue without inbuilt methods, Realtime example of each data structures). As I told them I was familiar in data science and analytics, AI/ML, I was asked questions from that core subjects of mine and as well as core subjects of CS like OS,DBMS, OOPS,SQL.