10 + Years Experience question asked in 2nd Interview are as below for: -what is Web Component? -what is Pure function? -what is web workers? -what is selfjoin? -what is clustered indexing? -what is child process? -what is diff in setimmediate and process.nexttick -what is diff between prototype and __proto -what is factor method? -diid Fetch and Put? -what is streaming? - How do you implement multiple api call at a time?