Meta Software Engineer interview questions

I applied through an internal referral. The process took about one week. A recruiter contacted me via email. At the interview, an engineer called me via phone. He was in bad mood. He asked me Why Facebook and was not satisfied with my answer at all. He interrupted me a lot during the whole interview.

Applied through referral. 45 minutes telephone interview. The interviewer was very nice. She guided me through the interview process and gave me 5 minutes to ask any questions. Two coding questions which are easy. One question is about Trie and the other is about binary search.