Exam NSE8_812 topic 1 question 47 discussion

If that secondary node fails as well (double failure) and you do not want the traffic to fail, configure the secondary system to 'fail open' (copper fail open, 1200B LC ports fail open, or you need a bypass bridge if you are using SFP/SFP+s). FortiDDoS appliances can be deployed as standalone appliances or as members of a high availability (HA) pair. FortiDDoS supports active-passive cluster pairs. In an HA pair, one node is the master node, and the other is called the slave node.

I suggest B and C for this DOC (https://help.fortinet.com/fddos/4-7-0/fortiddos/HA_feature_overview.htm)

B and D as per ama6.

Correct Answer AC https://help.fortinet.com/fddos/4-3-0/FortiDDoS/Understanding_FortiDDoS_rate_limiting_thresholds_.htm also note that LC interfaces have bypass.

The other options are incorrect. Option A is incorrect because changing the Adaptive Mode will not prevent the device from dropping traffic. Option C is incorrect because moving the internet connection from the SFP interfaces to the LC interfaces will not change the throughput capacity of the device

Explanation: B is correct because creating an HA setup with a second FortiDDoS 200F will provide redundancy in case one of the devices fails. This will prevent all traffic from being dropped in the event of a failure. D is correct because the FortiDDoS 1500F has a larger throughput capacity than the FortiDDoS 200F. This means that it will be less likely to drop traffic even under heavy load.