Impersonation analysis is a feature that detects emails that attempt to impersonate a trusted sender, such as a company executive or a well-known brand, by using spoofed or look-alike email addresses. This feature can help prevent phishing and business email compromise (BEC) attacks. Impersonation analysis can be enabled in an antispam profile and applied to a firewall policy. References:https://docs.fortinet.com/document/fortimail
/6.4.0/administration-guide/103663/impersonation-analysis
https://docs.fortinet.com/document/fortimail/7.2.0/cookbook/221814/protecting-against-email-impersonation- in-fortimail

Based on the configuration, the statement that is correct regarding SNAT source port partitioning behavior is that it statically distributes SNAT source ports to operating FPCs or FPMs. This is because the nat-source-port option is set to chassis-slots, which means that the FortiGate-6000 will allocate SNAT source ports to all FPCs or FPMs that are enabled when the command is entered. If an FPC or FPM is disabled from the CLI, the SNAT source ports assigned to that FPC or FPM will not be re-allocated to the remaining FPCs or FPMs. This option preserves active sessions when an FPC or FPM goes down, but does not dynamically re-distribute SNAT source ports if an FPC or FPM is powered off. Reference: https://docs.fortinet.com/document/fortigate/7.2.5/fortigate-6000-administration-guide/81276/controlling-snat-port-partitioning-behavior

SD-WAN is a feature that allows users to optimize network performance and reliability by using multiple WAN links and applying rules based on various criteria, such as latency, jitter, packet loss, etc. One way to ensure that the FortiGate DNS resolution times are as low as possible with the least amount of work is to configure local out traffic to use the outgoing interface based on SD-WAN rules with the interface IP and configure an SD-WAN rule to the DNS server. This means that the FortiGate will use the best WAN link available to send DNS queries to the DNS server according to the SD-WAN rule, and use its own interface IP as the source address. This avoids NAT issues and ensures optimal DNS performance. References:
https://docs.fortinet.com/document/fortigate/7.0.0/sd-wan/19662/sd-wan

To review this log on FortiAnalyzer GUI, the administrator should use the time filter that matches the local time zone of FortiAnalyzer, which is GMT-0800. Since the log was generated at 20:37 UTC (GMT+0000), the corresponding time in GMT-0800 is 20:37 - 8 hours = 12:37. However, since DST is disabled on FortiAnalyzer, the administrator should add one hour to account for daylight saving time difference, resulting in 12:37 + 1 hour = 13:37. Therefore, the time filter to use is 13:37:08. References: https://docs.fortinet.com/document/fortianalyzer/6.4.0/administration-guide/103664/time-zone-and-daylight-saving-time