Before the STA associates with the AP, it needs to exchange some messages to obtain the SSID. What are these messages?

As shown in the following figure, router A and router B establish an OSPF neighbor relationship. The OSPF process number of router A is 1, and the area number is 0. Which of the following configurations on router A can enable router B to obtain the network segment of host A routing? (Multiple choice)

Both pwd and dir commands in the VRP operating platform can view the file information under the current directory.

The broadcast address is a special address in which the host bits in the network address are all set to 1, and it can also be used as a host address.

On Huawei ARG3 series routers, what authentication modes does AAA support? (Multiple Choice)