Arista Networks Software Engineer - Platform interview questions

I met recruiters at the job fair my school hosted. Had a great talk with them and hit it off well with one of them and was offered an interview. The interview process was pretty straightforward. I was contacted with an interview offer, a phone interview with a shared screen terminal session was used to do the coding challenges. A week or two went by and the interviewer kept in touch with me. I was kept informed of their internal process (they had to finish interviewing the rest of the applicants) and then I received an offer.

I applied through a recruiter. He first asked me to answer some questions regarding my background, my programming skills and etc in an email. Then, I was invited for an onsite interview. The guy who interviewed me was very kind and helpful. The system was Unix. Interview lasted about 1 hour and at the end he told me I think your are not a good match.