NVIDIA Devops Engineer interview questions

I got a call from their HR Agency (Careernet) if I was interested. Then the first round was scheduled in a week's time which covered your CI/CD basics, containers, VM, Jenkins Pipeline, Dockerfile, Ansible, and Kubernetes. The second round was on the next day, which was the coding round. The interviewer started with a moderate programming question which I couldn't answer. Then he reduced the level of difficulty in which I was able to solve the problem the pythonic way (using in-built functions), but he wanted the program without those. I was not able to solve those also without in-built functions. The programming questions were really easy, I was able to solve them after the interview when I was calm. :( Overall the process was very smooth. Unfortunately, I needed more coding practice.