A static-route command follows the structure ip route destination-network subnet-mask next-hop administrative-distance. The required destination is 192.168.10.0/24, which corresponds to subnet mask
255.255.255.0. The next-hop address must be 192.168.20.1, and the routing-table exhibit confirms that the
192.168.20.0/24 network is directly connected through VLAN 10. The final value must be 2 because the question explicitly requires an administrative distance of 2. Option A uses the correct destination and next hop but sets the distance to 1. Options B and D incorrectly reverse the destination and next-hop networks.
Consequently, only option C contains all four required elements and installs the route through the connected
192.168.20.0/24 network with the specified preference.

Reference: https://www.cisco.com/c/en/us/support/docs/security/sourcefire-defense-center/117663-technote- SourceFire-00.html

In inline IPS mode, to ensure that traffic passes through uninterrupted when VDB (Vulnerability Database) updates are being applied, the "Short Fall Open" setting must be configured. This setting allows traffic to continue to flow through the firewall even if there are issues with the inspection process, such as during updates or if the inspection engine fails.
Steps:
* In FMC, navigate to the inline set configuration.
* Enable the "Short Fall Open" option.
* Deploy the configuration to the FTD device.
This ensures that network traffic is not disrupted during updates or other issues with the inspection process.
References: Cisco Secure Firewall Threat Defense Configuration Guide, Chapter on Inline IPS Mode Configuration.