The correct answers are B and C .
The FortiEDR 7.0.0 Administration Guide has a specific troubleshooting section named “A FortiEDR Collector does not display in the INVENTORY tab.” It states that after a Collector is first launched, it registers with the FortiEDR Central Manager and appears in the Inventory tab. If it does not appear, the first checks are to confirm that the device where the Collector is installed is powered on and has Internet connectivity, and to validate that ports 8081 and 555 are available and not blocked by another third-party product.
Option B is therefore correct in the exam sense because ports 8081 and 555 must be open for FortiEDR communication. More precisely, the Collector communicates with the Aggregator on port 8081 and the Core on port 555 , not directly to the Central Manager in every architecture. The option wording says “between the collector and the central manager,” which is technically loose, but the required troubleshooting item is still the port availability.
Option C is also correct because the same guide says to check that the endpoint is powered on and connected. In practical FortiEDR troubleshooting, this includes confirming the FortiEDR Collector service/driver are running on the endpoint; otherwise the Collector cannot register or report health.
Option A is not listed in the FortiEDR guide as a required step for this issue. Option D is not the best answer because the guide says logs are generally retrieved when Fortinet Support requests them, and Collector logs can only be exported for Collectors in Running status; a newly installed Collector that does not appear in Inventory cannot normally be selected from Central Manager for log export.
