Arista Networks interview questions

The process was well laid out and fair. It was technical in nature, which of course makes sense because this is a technical position. According to the recruiter there were 4 parts of the interview process: a phone call from the recruiter, a remote interview with an engineer, a face-to-face interview with the hiring manager and a phone interview with a director. I passed the 2 first, but failed the 3rd. The phone conversation with the recruiter was more exploratory in nature. She would ask some questions about my profile and explain what Arista is and what the role entails. Second interview is remote with an engineer. The give you access to an SSH server. In it you land on a BASH shell with a folder named "exercise". Inside that folder there are several folders (in my case 6 if I recall correctly) with exercises. The interviewer asked me to solve 2 of those exercises (which can have 2 or more parts). Then at the end we had time for questions. Third interview was face-to-face with the hiring manager and another engineer, in their offices. We were in a meeting room. They each had a laptop, and there was an extra computer for me to use. In it, the same (or very similar) BASH shell from the second interview was visible. They asked me to use it for the interview. There were several technical questions, related to the Linux environment. There were also questions related to a BASH exercise and a system design question. After this interview, my application was rejected