VMware interview questions

2 rounds of telephonic 1 round online Onsite 1:1

I was first contacted by a recruiter from VMware who scheduled a phone interview with one of the engineers. The gentleman who called went straight to the interviewing, first asking me to identify all possible bugs within a given chunk of code and then asking various low level OS and some USB protocol questions. The interviewer was completely impersonal but did give me a few hints here and there. I was fortunate enough to get to see the feedback that the gentleman wrote after our conversation, according to which I didn't answer anything wrong but did not give the answer he expected.