What application ensures your computer has the most recent versions of its system software?

The application that ensures your computer has the most recent versions of its system software is Windows Update. This tool is specifically designed to download and install updates released by Microsoft for the Windows operating system and its components. These updates can include important security patches, feature enhancements, driver updates, and other improvements that help to maintain the performance and security of the system.

Windows Update operates in the background, automatically checking for updates at scheduled intervals or on-demand when initiated by the user. Keeping the operating system up to date is crucial for protecting against vulnerabilities and ensuring compatibility with other software and hardware.

In contrast, the other options serve different purposes: Windows Firewall is a security feature that helps to protect the computer from unauthorized access, System Restore allows users to revert their system settings to a previous state in case of problems, and Disk Cleanup is a utility that frees up disk space by removing unnecessary files but does not manage software updates. Thus, the role of ensuring current system software is specifically assigned to Windows Update.