Microsoft Software Engineer (internship) interview questions

I applied online with an invitation from a recruiter through LinkedIn, got an in person interview on campus with an engineer, it was a 1-1 interview. The next step is on-site, most likely in Seattle.

The interview was scheduled for October 14th. It started with a brief introduction, and then the interviewer started testing me on the concepts of OOPS. I was happy because this was one topic that I had never prepared for in my college life because my concepts were clear right from 10+2. I was asked about some concepts in inheritance, like polymorphism, the difference between method overloading and method overriding, virtual keywords, and abstraction