I got the opportunity through a recruiter, followed by two one-hour technical phone interviews, each with a two-person team. The on-site interview was set up in NYC. They have a mass interview setup with tiny glass cubes where everyone can see you. It was weird looking at other interview candidates in the next three to four cubes and hearing them too. They offer free food and have a cool atmosphere right in Manhattan.

How do you find if a Facebook friend is connected to another person, given that there might be many indirect friends?

A multithreading question involving semaphores, mutexes, and condition variables.

Specific C++ (version 11) questions. They don't care if you know previous versions of C++. Learn shared_ptr, unique_ptr, scoped_ptr, and other new features in C++11 inside and out.