SNCF — Securing Networks with Firepower — Question 115

An engineer is working on a LAN switch and has noticed that its network connection to the inline Cisco IPS has gone down. Upon troubleshooting, it is determined that the switch is working as expected. What must have been implemented for this failure to occur?

Answer options

• A. The upstream router has a misconfigured routing protocol.
• B. Link-state propagation is enabled.
• C. The Cisco IPS has been configured to be in fail-open mode.
• D. The Cisco IPS is configured in detection mode.

Correct answer: B

Explanation

The correct answer is B because if link-state propagation is enabled, it allows the switch to effectively communicate link-state information, which is vital for maintaining a stable connection. Options A, C, and D do not directly relate to the failure of the network connection since they pertain to routing protocols and the operational modes of the IPS, which do not necessarily indicate a problem with the switch itself.