Backup and restore in windows 7 and windows 10 you

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Backup and Restore In Windows 7 and Windows 10, you can use Backup and Restore from within Control Panel to restore files from a backup set. When you restore files from a backup, you restore the file as it existed when the backup was taken. You can restore individual files or complete folders from the backup. File History In Windows 8 and Windows 10, you can use File History from within Control Panel to restore files or folders. When you restore files using File History, you restore the file as it existed when the snapshot was taken. Virtual Memory 0:00-0:17
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Virtual memory plays a very important role in the Windows operating system because it allows you to run more applications on the system then you actually have physical memory to support. So with that in mind let's talk about how virtual memory on Windows works. How Virtual Memory Works 0:18-1:08 Understand that the Windows operating system itself, along with any applications that you launch are initially loaded by the Windows kernel into physical system RAM. But, as more applications are loadedwhile the system is being used, it may actually run out of physical RAM. When this happens, Windows can actually move inactive information out of the physical RAM, into a file on the disk drive. In Windows this file is called the paging file. Understand that modern CPU's can actually map memory addresses to both physical RAM, as well as to files on the hard disk drive. That way, when the system needs more memory it can actually map some of it's available memory addresses to the hard disk drive. And this makes it appear as though the system has more memory available then it really does. Swapping 1:09-3:37 So with memory addresses available for both the system RAM and for a file on the hard disk drive.The Windows operating system can actually swap data. For example, suppose this computer here is running Windows and it currently has four applications loaded. App one, app two, app three, and app four. Now suppose the user needs to load a fifth application named app five. However, there isn't enough physical RAM installed on this system to support the additional application. So, to make room Windows will review the currently loaded processes. And it will try to find data that is not actively being used and if it does the Windows kernel can try to move the memory addresses that are assigned to that data, from physical RAM to memory addresses on the paging file. On the hard disk drive. So in this example let's suppose that the information associated with app one is currently inactive. So, it's moved to the paging file on disk. And when this happens, it frees up memoryaddresses in physical RAM, allowing app five to be loaded even though the system technically does not have enough physical RAM to support all five applications at the same time. Even though app ones been swapped to disk. It's still remains running.
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