Get ready to design an in-memory file system, a classic case study that explores how operating systems manage files and directories. This interview will test your ability to model hierarchical structures, support file operations, and consider error handling in a constrained, memory-only environment. You’ll demonstrate how to translate real-world OS concepts into clean, object-oriented designs.

What You'll Practice:

• Gathering and refining system requirements for a file system.
• Modeling hierarchical relationships using OOP principles.
• Applying design patterns to manage file and directory operations.
• Handling edge cases and enforcing constraints (e.g., unique names, invalid paths).
• Visualizing relationships and flows with UML class diagrams.

By the end of this interview, you will sharpen your ability to design robust, extensible, and maintainable systems that mirror real-world complexities in file management.