XK0-005 · Question #1739
XK0-005 Question #1739: Real Exam Question with Answer & Explanation
The correct answer is A: systemctl mask postfix.service. The systemctl mask postfix.service command prevents the Postfix service from being started manually or automatically by symlinking its service file to /dev/null. This ensures that even if a system restart or upgrade occurs, the service will remain disabled and will not start.
Question
A Linux administrator needs to harden a system and guarantee that the Postfix service will not run, even after a restart or system upgrade. Which of the following commands allows the administrator to fulfill the requirement?
Options
- Asystemctl mask postfix.service
- Bsystemctl disable postfix.service
- Csystemctl stop postfix.service
- Dsystemctl -n restart postfix.service
Explanation
The systemctl mask postfix.service command prevents the Postfix service from being started manually or automatically by symlinking its service file to /dev/null. This ensures that even if a system restart or upgrade occurs, the service will remain disabled and will not start.
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