What command enables the Zabbix server service to start on every boot?

The command that enables the Zabbix server service to start automatically at boot time is the one that uses systemctl enable zabbix-server. This command effectively creates the necessary symbolic links that allow the service to be started during the boot process.

When you use the --now flag in conjunction with the enable option, it not only enables the service to start at boot but also initiates the service immediately. This is useful for ensuring that the service is not only set up to run on boot but is also running right away, allowing for immediate functionality.

The command systemctl enable zabbix-server on its own would suffice to configure the service to start on boot; however, it would not start the service immediately. Instead, it sets up the necessary infrastructure, leaving the service to be started during the next boot.

Using systemctl start zabbix-server --enable misrepresents the functionality as --enable is not a valid option for the start command. Lastly, the option 'start zabbix-server on boot' is not a recognized command in the systemctl syntax and would not function as intended.

In summary, the correct answer encompasses the critical aspects of both enabling the