Sunstone Senior Software Engineer interview questions

the interview is basically of 3 rounds. all the rounds are technical. In first-round, the interviewer asked about questions on node like architecture and working of the node, event loop, process, and many others. After this, the second round was an assignment that has to be complete in 1 day. Tech use to do assignment was Express framework, Mysql, Angular, After this there was another technical interview through skype in which they ask about the database, create a schema and write queries, javascript questions, and node js related questions. question on database