What does "Zabbix agent active mode" signify?

• A. The agent sends data to the server as requested, without constant polling
• B. The agent polls the server for data consistently
• C. It can only collect data about system performance
• D. The agent operates only in passive mode

Answer: (A)

The concept of "Zabbix agent active mode" refers to a particular operational mode of the Zabbix agent, wherein the agent takes a proactive approach in communication with the Zabbix server. In this mode, the agent is responsible for sending data at intervals defined in its configuration, rather than waiting for the server to request specific metrics. This means that the agent initiates the data transfer, allowing for more efficient communication and reducing the load on the server by limiting the number of polling requests.

This active mode is advantageous in scenarios where the monitored systems might not be consistently available for polling, or when there is a need for real-time data monitoring, as it enables the agent to send results as soon as they are available without waiting for a broker request.

In contrast, other operational modes like passive mode would rely on the server to request data, making it less efficient in environments where timely data is crucial. This is why the rationale for the active mode emphasizes data transmission as initiated by the agent rather than being simply responsive to server commands.