220-902 – Q235

A user has installed several applications, which has led to critical OS files being overwritten by files supplied by the application’s creator. Which of the following commands and switches should a technician run to restore OS files to their original versions?

A. sfc /scannow
B. chkdsk /r
C. tasklist /svc
D. gpupdate /force

Correct Answer: A
Reference https://support.microsoft.com/en-us/help/929833/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system