Hello, thank you for reaching out to Microsoft Q&A.
It seems that the technician has completely reinstalled Windows 11 from a USB Bootable Installation media drive. This means that you will only have Windows 11 OS on the device. Even if you reset your PC to factory defaults, it will return to the same Windows version that you're currently using.
To check the activation status, go to Start > Settings > System > Activation.
If the device came with a pre-installed Windows Operating System (OEM Key), the license will be activated automatically when you set up Windows.
Type Winver in the search bar on the taskbar and click enter.
If your device is running Windows 11 version 25H2, it means your PC is already on the latest version of Windows 11. You can continue using your device normally from this point.
If you have any questions or specifically any features or settings are missing, let me know.