1, there will be no conflict. Dual network cards use the same port, and a dual network card computer or server can be configured with two completely different IPS. The server has two network cards, one is configured with the public network, and the other is configured with the intranet, so that the clients of the intranet can access the services of the intranet, while the clients of the public network cannot access the services of the intranet.

2. There will be conflicts. The two gateways set by two network cards are both set as default gateways, which will conflict and lead to network impassability.