What are valid options for handling DNS requests sent directly to a FortiGates interface IP? (Choose three.)

"Conditional-forward" is a specific feature for forwarding queries for particular domains, not a general mode for handling all DNS requests sent to an interface IP.

A FortiGate configured as a forward-only DNS server directs all DNS queries it receives to specified external DNS servers, without attempting to resolve them locally.

A FortiGate acting as a non-recursive DNS server will only respond to queries if it has authoritative information or cached records, it will not query other servers for unknown answers.

"Iterative" describes a type of DNS query process where a server repeatedly queries other servers, but it is not a direct configuration option for a FortiGate's DNS handling mode for incoming requests.

A FortiGate configured as a recursive DNS server attempts to fully resolve a DNS query by querying other DNS servers (e.g., root, TLD, authoritative servers) if it doesn't have the answer in its cache or authoritative zones.