Talent Recruit Software Software Developer interview questions

It was mostly related to the projects that I mentioned in my resume( Front/Backend). I was asked to open the source code in my local system while sharing the screen and there were many cross questioning done from his side on various points including but not limited to use of MongoDb, how did i create server using express, Why did I use EJS, what's a schema, difference between primary and foreign keys and many more. Then he asked me to code some functions in JavaScript to test my basic understanding and skills.

what is your future goal? why from core to non-core?