There were totally 2 rounds and then HR discussion.
On First round, there was a brief discussion on every DevOps tools such as Cloud, Scripting(Python), Jenkins, Concur, Terraform, Grafana, Kubernetes and Docker. A Senior manager evaluated my area of expertise on these tools.
The Second round went deeper on the same topics for about 1 hour or so. They are expecting complete hands on skills on all the areas.