NVIDIA Software Developer interview questions

It was a phone interview. Ask a lot about OS related questions (paging, buffer overflow, etc). Two programming related questions. linked list and find bugs in a program. Need to talk a lot of details when describe those OS terms.

I was hired from college as NCG. Shortlisting was done with written tests then I had four technical rounds back to back. Every one covering different topics from c/cpp and problem solving. Then followed by HR with normal HR questions.