They will have 3-4 rounds of interview. First will be senior person who just asks why your company is using this tool and why not. Questions will be set alert on kibana and not on Grafana. difference between datadog and grafana. Totally weired questions. No questions related to Java. "Java is awesome" print it in reverse order "awesome is Java". When written code correctly with starting from end. Question is why not using Collections. Explained about why do we need space complexity if we can solve in efficent way. Even if we use stack and all, it will still be O(n) with space also. But don't knwo what he wanted.