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

When building a campus network, which of the following protocols can be used to avoid Layer 2 loops?

The priority of the LACP protocol is shown in the figure. Switch A and Switch B adopt LACP mode link aggregation, and all interfaces are added to the link aggregation group. At the same time, set the maximum number of active ports to 3. Then which port of switch A is not an active port ? () (Single-choice question)

On Huawei devices, if you use aaA authentication to authorize. When the remote server does not respond, you can authorize from the network device side ()

Which of the following networks belong to a local area network? ()