Networking: 1.What happens when you type www.google.com in the browser? 2.Explain all OSI layers based on this flow. 3.Some questions on network protocols. Operating Systems: 1.Round-robin scheduling 2.Deadlocks DSA: 1.Reverse the words in a given string. 2.Remove elements appearing more than twice in an array while maintaining order (e.g., if 4 appears 3 times, remove only the third occurrence).