How item for Zabbix agent exactly works?

[Kirin2]

Hi,

How items for Zabbix agents exactly work?
For example, for OS Windows Zabbix has template which contain item 'System Information'. How Zabbix know which information it should request from Windows? I suspect that Zabbix defined items mean commands for Windows, like "write in cmd 'systeminfo' and send output to me " .

Am I right? If no, could someone explain how it works?

[Atsushi]

Each OS metric on Windows is obtained using an API that obtains system information of Windows. systeminfo command is not executed.
Check the contents of the source for details.

Source files:
src/libs/zbxsysinfo/win32/