CompTIA A+ Core 2 (220-1202)Operating SystemsMedium
A user reports that their Windows 11 computer is running slowly and applications are frequently crashing. The technician suspects that the system files might be corrupted. Which command-line tool should the technician use to scan for and attempt to repair corrupted Windows system files?
- Achkdsk
- Bdism
- Csfc
- Ddefrag
Show answer & explanationAnswer & explanation
Correct answer: C. sfc
The System File Checker (sfc) tool is designed to scan for and replace corrupted or missing Windows system files with correct versions.
Why the other options are wrong
- A. chkdsk is used to check a disk for errors and bad sectors, not specifically corrupted system files.
- B. dism (Deployment Image Servicing and Management) is used to prepare, modify, and repair Windows images, but sfc is more direct for live system file corruption.
- D. defrag is used to defragment fragmented files on a hard drive to improve performance.
System File Checker (sfc)
A Windows command-line utility that scans for and restores corrupted or missing protected system files.
- Requires administrator privileges to run.
- Often used with the '/scannow' option.
- Helps resolve system instability due to file corruption.
Memory trick: System Files Corruption? SFC is your only Fixer.