Cisco Interview experience | Set 21 (Off-Campus)

I got a call from Cisco Systems, Bangalore for Software Engineer role. Total rounds: Hackerrank Test+ 3(Tech) + 1 (Managerial) Hackerrank test is pretty standard Linked List, arrays, trees. Round 1: Lot of questions from the resume, implement IPC on threads, Linked List questions, various IPCs, implement mutex locks. Round 2: Networking questions, hub vs switch, significance of gateway, how to route packet from one network to another, how would you build a packet when it goes from one network to another, bit manipulation Round 3: Resume projects, hell lot of questions Round 4: (Managerial) About the role, Why do you want to switch so early?, Mostly critical bug you have solved?, Why Cisco?