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Windows XP is based on the improved and modifed kernel of system Windows 2000, its stability is checked up by time. Kernel Windows XP is reliably protected from errors in work of separate programs. Besides, working programs are isolated from each other, and using of various appendices of system resources is completely supervised by a kernel. In Windows XP also are realized a number of additional functions for maintenance of reliability and fault tolerance of system:
* Protection of system files – if the applied program will try to replace an important system file Windows XP won’t allow to make it, all files intended for work with the given program will be copied in a special folder and access to them will be provided in a program operating time. So integrity of system remains and work of the programs demanding replacement of system files is provided.
* Check of drivers on compatibility and their recoil – all drivers before installation by system Windows XP pass check on presence of digital signature Microsoft. At its absence the program will give out the prevention. The end user can establish such driver, but will make it at own risk. Also possibility to execute recoil to the previous version of the driver is realized at the arisen problems with again established.
* Automatic updating – is carried out in the presence of communication through the Internet, all updatings and corrections are established from site Microsoft.
* system Restoration – allows to return system in one of the previous conditions at occurrence of problems. Gathering of the information for restoration is conducted in the automatic mode, all changes of system files are traced.
* the Improved means of elimination of failures – at impossibility to load system in the traditional way it is possible to load last successful configuration. If all attempts appear unsuccessful, it is possible to use system of emergency restoration of system (ASR) which create in advance by means of the built in program of archiving.
In the presence of sufficient hardware Windows XP provides higher of productivity in comparison with the previous versions that is reached thanks to more perfect architecture of system.