A technician believes a machine loaded with Windows XP Professional has issues with file integrity of the core OS components. Which of the following commands could be used to both check and replace damaged files?

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A. SFC /SCANNOW The System File Checker (SFC) with the /SCANNOW switch immediately scans the integrity of all protected operating system files and replaces corrupted or missing ones with correct versions stored in the Windows component store (%WinDir%\System32\dllcache). This directly addresses both the checking and replacement requirements stated in the question. It is the purpose-built tool for OS file integrity repair.

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B. CHKDSK /R /F CHKDSK /R /F scans and repairs physical disk errors and bad sectors; it does not examine or restore Windows OS file integrity.

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C. FORMAT C: FORMAT C: erases all data on the C drive and rebuilds the file system, which is destructive and does not repair individual corrupted OS files.

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D. DISKPART DISKPART is a disk partitioning and management utility; it has no ability to scan or repair OS file integrity.

A technician believes a machine loaded with Windows XP Professional has issues with file integrity of the core OS components. Which of the following commands could be used to both check and replace…

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