I attended walk-in interview. Two rounds were conducted one in person and one virtual round. In both rounds questions are constructors, destructors, copy assignment, copy constructor, basics of STL, smart pointers, mutex, semaphore, basics about threads, storage containers, virtual functions, vtable, OOPS, run time polymorphism, overriding, overloading, deadlock, static vs global. There was third round from client asked to explain architecture of current project, asked to implement factory pattern, singleton pattern and design a class to make led blink.

They covered almost all the topics in C++ such as oops,stl,design pattern... They will be testing how much depth you having the knowledge on the topics you know....It is not much complicated interview. I was appearing for the interview venue at 10 but i was interviewed at 3 only..