What are the 5 layers of an operating system?

The five layers of an operating system typically include the following:

1. Hardware Layer: The physical components of the computer, such as the CPU, memory, and I/O devices.
2. Kernel Layer: The core component that manages system resources, process scheduling, and communication between hardware and software.
3. System Call Interface Layer: The interface that allows application programs to request services from the kernel.
4. User Interface Layer: The layer that provides users with interaction methods, including command-line interfaces (CLI) and graphical user interfaces (GUI).
5. Application Layer: The top layer where user applications run, utilizing the services provided by the underlying layers.