i applied through email to hr as they hiring for node js dev. interviewer is in hurry. as he strited directly on theory. dude you are hiring eng. just dont ask theory what is node js what deep copy. everyone know these stynex or predefind thing can be learrnd later. i urge to start with preoblem solving skill. i think they dont know what is dsa only 2 question and thankyou your interview is done, seriosly..... not so good.