It was a technical round where they gave 4-5 coding questions (in any language of your choice) . They asked data structures, to code for insertion in a linked link, doubly linked list, bst etc. They gave ample amount of time but asked to explain each and every step in detail. Then C++ concepts, inheritance, polymorphism, abstraction and explain it in detail and code for it. Dynamic memory allocation , memory leaks, operating system concepts. They mostly focused on c++. It went on for 2 hours.