The correct answer is A . FortiNAC-F Manager provides global visibility by collecting user and endpoint visibility information from the FortiNAC-F devices it manages, creating a centralized repository of users, hosts, and adapters. The study guide describes this as a global visibility function where endpoint information received by the Manager includes the local FortiNAC-F device from which the information came, allowing administrators to search and filter endpoint records across managed systems.
The key point is that this is not a real-time host-status trigger. Fortinet's FortiNAC-F Manager documentation states that FortiNAC Manager controls host and user record replication between managed FortiNAC CA servers and initiates synchronization every five minutes between servers. It also states that global object synchronization uses an interval-based process, not an administrator manually synchronizing each CA for endpoint visibility.
Option B is wrong because host status changes are not treated as immediate real-time updates to every managed FortiNAC-F database. Option C is wrong because manual synchronization applies to global/shared configuration objects, not routine endpoint visibility updates. Option D is wrong because the mechanism is not a CA-side scheduled push to the Manager; the Manager-controlled synchronization/collection process is what maintains the shared endpoint view.