After the two routers are configured with 0SPF, the administrator configures the command on RTA.
The following description is correct ()

Which of the following descriptions about the router is wrong?

In the OSPF protocol, the correct one in the following description of DR is (). ()*

The controller is the core component of SDN. The controller connects to the device through the southbound interface. Which of the following belong to the controller southbound protocol?

Network as shown in the picture. The administrator hopes that all hosts cannot access the Web service (the port number is 80). Other services can be accessed normally. In the interface configuration of G0/0/1, which ACL rule needs to be bound to trattie-frilter outbound?