What feature must be activated on the FortiGate device for logging to begin?

For logging to begin on a FortiGate device, it is essential to activate the logging capabilities feature. This feature enables the device to capture and save logs related to various activities, events, and security incidents that occur on the network. Without logging capabilities activated, the FortiGate will not record or retain information about its operations, making it impossible to analyze or audit network activities afterward.

The other options pertain to different functionalities that, while important, do not directly initiate logging on the FortiGate device. Advanced reporting involves the analysis and presentation of log data but does not impact the logging process itself. Log collection for specific interfaces allows for targeted logging but is contingent upon logging capabilities being enabled first. Network segmentation relates to organizing network resources into segments for improved security and management, but it does not affect the logging function directly. Thus, having logging capabilities activated is the fundamental requirement for logging to commence on the FortiGate device.