SNCF — Securing Networks with Firepower — Question 25

An organization has a Cisco FTD that uses bridge groups to pass traffic from the inside interfaces to the outside interfaces. They are unable to gather information about neighboring Cisco devices or use multicast in their environment. What must be done to resolve this issue?

Answer options

• A. Create a firewall rule to allow CDP traffic
• B. Create a bridge group with the firewall interfaces
• C. Change the firewall mode to transparent
• D. Change the firewall mode to routed

Correct answer: C

Explanation

Changing the firewall mode to transparent allows the Cisco FTD to pass Layer 2 traffic, which enables CDP and multicast to function properly. The other options do not address the root cause of the issue; specifically, creating a rule for CDP traffic or establishing a bridge group does not change the underlying operational mode of the device.