Exam 300-710 topic 1 question 59 discussion

The correct answer is: A. Confirm that both devices are running the same software version. Ensuring that both Cisco Firepower Threat Defense (FTD) devices are running the same software version is crucial for successful synchronization. Mismatched software versions can lead to compatibility issues and synchronization failures. Option C, which involves confirming that both devices have the same flash memory sizes, is not typically a requirement for synchronization between Cisco FTD devices. The primary factor that affects synchronization is the software version. If the devices are running different software versions, they may not be able to communicate and synchronize properly. While having the same flash memory sizes might be important for other aspects of device performance and storage capacity, it does not directly impact the synchronization process. Ensuring both devices are running the same software version is crucial for compatibility and successful synchronization.

what kind of questions is this? :( IF i need to choose one, I will go "memory" because below guys explained very well.

A & B is correct according to this https://www.cisco.com/c/en/us/td/docs/security/firepower/610/configuration/guide/fpmc-config-guide-v61/firepower_threat_defense_high_availability.html#ID-2107-00000019 ...Hardware Requirements: ... - Have the same number and types of interfaces. ... ... Software Requirements ... - Have the same software version....

The answer is C because if the flash memory is smaller on the secondary, then syncing will fail. Confirming that both devices are running the same code is a perquisite for HA and does not have anything to do with synchronization failure.

synchronization is failing not HA pairing - C

B. Confirm that both devices are running the same software version. When setting up a pair of Cisco FTD devices for high availability, both devices must run the same software version. If the software versions are different, the synchronization between the two devices may fail, causing downtime. Therefore, ensuring that both devices are running the same software version should resolve the synchronization issue. Confirming that both devices have the same port-channel numbering, configured with the same types of interfaces, and have the same flash memory sizes are not likely to affect the synchronization process between the two devices.

A. Confirm that both devices are running the same software version. Ensuring that both devices are running the same software version is critical for successful synchronization between the two devices. If the devices are running different software versions, the synchronization process will fail. The other options listed are not related to the synchronization process and are unlikely to cause synchronization issues.

The question is not asking the requirement of HA, but it is asking "During the setup process the synchronization between the HA fails" so the answer is the synchronization fails due to less flash memory space in the second firewall

I agree with those select C. The keyword in the question is "synchronization" The HA is created, but synchronization fails, so the reason is the second firewall has less flash memory. Please read this paragraph from Cisco site If you are using units with different flash memory sizes in your High Availability configuration, make sure the unit with the smaller flash memory has enough space to accommodate the software image files and the configuration files. If it does not, configuration synchronization from the unit with the larger flash memory to the unit with the smaller flash memory will fail. https://www.cisco.com/c/en/us/td/docs/security/firepower/610/configuration/guide/fpmc-config-guide-v61/firepower_threat_defense_high_availability.html

C I agree with everyone, The devices must have the same type and number of interfaces and software needs to be on same version. However, the question is specifically touching on synchronization issues, so the answer is C. If you are using units with different flash memory sizes in your High Availability configuration, make sure the unit with the smaller flash memory has enough space to accommodate the software image files and the configuration files. If it does not, configuration synchronization from the unit with the larger flash memory to the unit with the smaller flash memory will fail. https://www.cisco.com/c/en/us/td/docs/security/firepower/623/configuration/guide/fpmc-config-guide-v623/firepower_threat_defense_high_availability.html

The devices also have to have the same version in order to create a HA...

Answer is B High Availability Requirements The devices must be the same hardware model. The devices must have the same modules installed. ... The devices must have the same type and number of interfaces. To create an HA pair in CDO, both devices must have management interfaces configured.

B The two units in a High Availability configuration must: Be the same model. Have the same number and types of interfaces. For the Firepower 4100/9300 chassis, all interfaces must be preconfigured in FXOS identically before you enable High Availability. If you change the interfaces after you enable High Availability, make the interface changes in FXOS on the Standby unit, and then make the same changes on the Active unit. If you are using units with different flash memory sizes in your High Availability configuration, make sure the unit with the smaller flash memory has enough space to accommodate the software image files and the configuration files. If it does not, configuration synchronization from the unit with the larger flash memory to the unit with the smaller flash memory will fail. https://www.cisco.com/c/en/us/td/docs/security/firepower/623/configuration/guide/fpmc-config-guide-v623/firepower_threat_defense_high_availability.html