The process took 3 weeks. I interviewed at Packet Design (Palo Alto, CA)
Interview
Its a rigorous interview with multiple rounds (only technical).
I had 6 rounds where almost all of their senior guys asked datastructure/puzzle questions. Since they are into networking, most of the questions were graph related
Interview questions [1]
Question 1
mainly tree, graph and sorting questions from data structures, puzzles like water filling in bucket, C++ inheritance, linux commands