NVIDIA Solution Architect Manager interview questions

1. The hiring team manager interview on phone. 2. The 4 interviewers from 4 different countries conducted individual interviews. The interviewers are from different countries. One was very unfriendly and said to me in the beginning of the interview that he thinks I don't have the experience they needed. Another one asked weird questions, such as "which loss function in AI do you favor the most. " The other two was great. They asked my research experiences and checked with the job description.