Linux Foundation Certified System Administrator (LFCS) — Question 49

Which of the following statements is correct when talking about /proc/?

Answer options

• A. All changes to files in /proc/ are stored in /etc/proc.d/ and restored on reboot.
• B. All files within /proc/ are read-only and their contents cannot be changed.
• C. All changes to files in /proc/ are immediately recognized by the kernel.
• D. All files within /proc/ are only readable by the root user.

Correct answer: C

Explanation

The correct answer is C because changes made to files in /proc/ are indeed recognized by the kernel immediately, reflecting real-time system information. Option A is incorrect since changes in /proc/ are not stored in /etc/proc.d/ or restored after a reboot. Option B is wrong because some files in /proc/ are writable, allowing changes to system parameters. Option D is incorrect as many files in /proc/ can be accessed by non-root users.