How does Zabbix monitor the web?

When monitoring web or interface scenarios, some new monitoring items are automatically added for monitoring.
After creating a web host, Zabbix will automatically add the following monitoring items for monitoring and link them to the selected application.
The item
describes
the download speed of the scene.
This item will collect information about the download speed (bytes per second) of the entire scene, which is the average of all steps. [size=10.5000pt]
Monitoring item key: web.test.in[Scenario,,bps]
The failed step of the scenario
This monitoring item will display the number of the failed step on the scenario. If all steps are executed successfully, 0 is returned. [size=10.5000pt]
Monitoring item key: web.test.fail[Scenario]
The latest error message of
the scenario This item returns the text of the last error message of the scenario. The new value will only be stored if the scene has a failed step. If all steps are normal, no new values ​​will be collected. [size=10.5000pt]
Monitoring item key: web.test.error[Scenario]
1. Select the host, select the host
in the configuration, and select the web monitoring in the host

2. In the upper right corner of the web monitoring page, select to create a web scene

3. Create Scenario, fill in the information according to the requirements

4. Create step

5. Then you can see the monitored web