Which statement best describes the role of FortiGuard in network security management?

The role of FortiGuard in network security management primarily revolves around ensuring that security devices are equipped with the latest security updates and threat intelligence. FortiGuard provides continuous updates to Fortinet products, including antivirus signatures, intrusion prevention system (IPS) signatures, web filtering data, and other critical protection measures. This is essential for maintaining the security posture of a network, as it allows devices to respond effectively to emerging threats and vulnerabilities. By updating security information regularly, FortiGuard helps organizations mitigate risks associated with new and evolving cyber threats.

The other options do not accurately capture the core functionality of FortiGuard. Physical security pertains to the protection of hardware against physical threats, which is outside the scope of FortiGuard's service. Centralizing internet traffic monitoring relates more to the function of FortiGate and other Fortinet devices rather than FortiGuard specifically. User access control is managed through different Fortinet solutions focusing on identity and access management, which are not the primary responsibilities of FortiGuard. Thus, the function of FortiGuard in providing updates and real-time threat intelligence is what makes this option the best description of its role in network security management.