How does the operating system handle user sessions?

The operating system handles user sessions primarily by managing login credentials and tracking user activity. This process involves authenticating users when they log in, ensuring that the proper credentials are verified before granting access to the system. Once logged in, the operating system maintains session data, which allows it to track user activities such as the applications they are using, their preferences, and other settings that personalize their interaction with the system.

Additionally, during the session, the operating system can enforce security measures and policies, ensuring that users can only access data and applications for which they have permission. When the session ends, the operating system may clean up any temporary data associated with that session, but it does so without deleting the user's saved files or personal information permanently. This process helps both in security management and user experience, allowing users to resume their work seamlessly across multiple sessions while keeping the system secure and organized.