CompTIA Linux+ (XK0-005) — Question 37

A development team asks an engineer to guarantee the persistency of journal log files across system reboots. Which of the following commands would accomplish this task?

Answer options

• A. grep -i auto /etc/systemd/journald.conf && systemctl restart systemd-journald.service
• B. cat /etc/systemd/journald.conf | awk '(print $1,$3)'
• C. sed -i 's/auto/persistent/g' /etc/systemd/journald.conf && sed -i 'persistent/s/ˆ#//q' /etc/systemd/journald.conf
• D. journalctl --list-boots && systemctl restart systemd-journald.service

Correct answer: C

Explanation

The correct answer is C because it modifies the journald configuration file to set the journal to persistent storage by replacing 'auto' with 'persistent'. The other options do not change the configuration to ensure persistence; option A restarts the service without modifying settings, option B does not alter the configuration at all, and option D only lists boots and restarts the service without ensuring logs are persisted.