A web server will not start on a Linux server. A Linux administrator troubleshooting the issue runs a few commands, which produce the following output:

Output 1: systemctl units Output 2: service status Output 3: firewall configuration Which of the following commands will allow the administrator to start the web server?

Question

A web server will not start on a Linux server. A Linux administrator troubleshooting the issue runs a few commands, which produce the following output:

Output 1: systemctl units Output 2: service status Output 3: firewall configuration Which of the following commands will allow the administrator to start the web server?

Accepted Answer

C. systemctl unmask httpd.service A masked service in systemd is one that has a symlink pointing to `/dev/null` in `/etc/systemd/system`, effectively preventing it from being started or enabled. If the web server (e.g., `httpd.service`) is masked, using `systemctl unmask httpd.service` will remove this symlink, allowing the administrator to then start the service.

Answer

A. systemctl stop firewalld.service Stopping the firewall might resolve connectivity issues but does not address the underlying problem of the web server service failing to start if it's masked or otherwise misconfigured.

Answer

B. systemctl daemon-reload `systemctl daemon-reload` reloads the systemd manager configuration, but it does not unmask a service or start it; it's typically used after modifying unit files.

Answer

D. systemctl enable httpd@.service `systemctl enable httpd@.service` is used to enable a templated service to start on boot, but it will fail if the service is masked and needs to be instantiated.

A web server will not start on a Linux server. A Linux administrator troubleshooting the issue runs a few commands, which produce the following output: Output 1: systemctl units Output 2: service…

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