I attended virtual career fair and got a follow up from them asking me to schedule an initial HR interview which consisted of all the same HR questions that are mentioned here. And I was scheduled for a technical interview three weeks later. I would suggest you to go through each and every question here, do not even leave a single question (I know it's difficult because there are so many questions but do your best to cover the maximum). Given below are the list of questions that I remember they asking me: calloc and malloc == and .equals constructor jvm and java abstract classes and interfaces garbage collection in java operators that are binary and unary default methods in a C++ class connected graph what is nfa and dfa can all nfa be converted to dfa? #include" " and #include< > difference explain each keyword in public static void main() A int (B union C) 4 faced dice, 6 faced dice, probablity that when rolled same number appears on both of them? implement queue using stack? AP nth term largest number an integer can represent? some code snippets asking me to explain what it does. inline funcion and macros In a class of 40 people, 24 people took mathematics and 12 people took both mathematics and english, and everyone in the class takes at least one course. So how many people take english alone? generics in java questions regarding calculating complexities. what does stdio.h contain? I have also been given many code snippets in C, C++ and Java and was asked to explain what that code outputs. With this interview preparation, I brushed up the basics of various languages(something to take away) :)