Boston Consulting Group Software Engineer - FrontEnd interview questions

I applied through Linkedin and got the call from HR and that is phone screening call she asked some basic React questions and why do you want to switch and all such questions, later I got call for OA it is 60 min test where i have to create UI for the given tasks its a bit dufficult within that time, I cleard that round later I got interview call for technical round he asked standard React and Javascript questions like Async, Differ rendering and all i was good enough I thought but I didnt crack that round.