I got an onsite interview without any phone screening. As others have mentioned, it was from 9 AM to 3 PM. I had 5 interviews, four of which were technical and one was talking to the manager and site director. The technical interviews were very interesting. I was asked questions on data structures and algorithms, core operating system, object-oriented design and concepts, and distributed systems. Each interview focused on one aspect. It was different than any other interview experiences I have had. However, the team of interviewers seemed to have a solid background and experience with systems. All in all, it was a great experience, and I am looking forward to hearing from them.

Difference of interface and abstract class in Java.