To access the services of the operating system, the interface is provided by th

The interface for accessing the services of the operating system is provided by the System Call.

Here are the steps to understand how it works:

1. User Mode and Kernel Mode: Operating systems have two modes: user mode and kernel mode. The user mode has restrictions to access hardware directly to prevent users from damaging the system. The kernel mode has unrestricted access to the system.

2. System Call Request: When a user wants to access hardware or any protected data, they make a system call request. This request is made in user mode.

3. Switch to Kernel Mode: The system then switches to kernel mode where it has the necessary privileges to access hardware or protected data.

4. Execution of System Call: The system call is then executed in kernel mode.

5. Return to User Mode: After the system call has been executed, the system switches back to user mode.

6. Return Control to User: Finally, control