Three rounds: Round1 - C development: * Write a function to swap two strings using pointers * How does CRC work? * How to identify the packet from one end on the other end - use unique IDs Round2 - Unix/Linux * Check if system is unix or linux - ans: uname * Find files * Command to check processes * Vi questions Round3 - Networking Concepts * IP Packet Structure * Ethernet fundamentals * How does IP Multicast work? Explain PIM & IGMP * IP Address & MAC Address over a router & switched network - what changes?