Which of the following are operating mode supported in FortiGate devices? (Choose two)

Proxy is an inspection method or service (e.g., proxy-based web filtering), not a fundamental operating mode for the entire FortiGate device.

Transparent mode allows the FortiGate to function as a Layer 2 bridge, inspecting traffic without requiring changes to the network's IP addressing or routing, essentially acting as a 'stealth firewall'.

NAT/Route mode is the default and most common operating mode, where the FortiGate acts as a Layer 3 router, performing Network Address Translation (NAT) and routing traffic between different network segments.

Offline inspection is a feature or deployment concept for some security tools, but it is not a standard, general operating mode for FortiGate firewalls.