Which command in Windows is used to check the integrity of system files? MCQ with Answer and Explanation

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Which command in Windows is used to check the integrity of system files?

A. sfc /scannow

B. dism

C. chkdsk

D. systeminfo

Answer: Option A

Solution (By JKSSB Mock Tests)

System File Checker (sfc /scannow) scans and repairs corrupted system files in Windows.

This question belongs to: Computer Operating Systems

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Question #1

Which Linux command is used to change the permissions of a file with symbolic notation?

A. chmod u+x file

B. All of the above

C. chmod g+w file

D. chmod o-r file

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Correct Answer: Option B

Explanation:
chmod accepts symbolic mode like u+x (add execute for owner), g+w (add write for group), o-r (remove read for others).

This question belongs to: Computer Operating Systems

Question #2

What is the purpose of the Android 'InputMethodManager'?

A. To control the cursor

B. To manage voice input

C. To manage the on-screen keyboard and input methods

D. To handle touch events

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Correct Answer: Option C

Explanation:
InputMethodManager allows apps to show/hide the soft keyboard and interact with input method editors (IMEs).

This question belongs to: Computer Operating Systems

Question #3

Which of the following is a type of file system that supports journaling?

A. ext3

B. ext4

C. All of the above

D. NTFS

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Correct Answer: Option C

Explanation:
ext3, ext4, and NTFS all support journaling, which logs changes to prevent corruption.

This question belongs to: Computer Operating Systems

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