LeetCode, trees, distributed systems, synchronization, operating systems, etc.

In a technical interview, I would describe operating systems as crucial software that manage computer hardware and provide a user-friendly interface. They handle task scheduling, memory management, file I/O, and device communication.

Operating systems ensure efficient resource allocation, process synchronization, and security.

Distributed systems, on the other hand, involve multiple interconnected computers working together, often requiring synchronization protocols to ensure data consistency and fault tolerance.

A question was asked: mutex, semaphore.