How is data collected for trapper items in Zabbix?

Trapper items in Zabbix are designed to receive data asynchronously from external sources. This means that data can be sent directly to the Zabbix server whenever it is generated or made available, without needing the server to continuously poll for updates. The Zabbix API is a powerful interface that allows external applications or scripts to communicate with the Zabbix server, enabling them to submit data for trapper items dynamically.

The advantage of using the Zabbix API for trapper items is that it provides a flexible and efficient way to report metrics. Since data can be sent at any time, it allows for real-time monitoring of events or changes in status from devices, applications, or services that need to communicate with Zabbix. This approach contrasts with methods that require constant checking or specific manual input.

In summary, the correct answer emphasizes the asynchronous nature of trapper items in Zabbix and the use of the Zabbix API for sending data efficiently.