By default, the port cost calculated by STP has a certain relationship with the port bandwidth, that is, the greater the bandwidth, the () the cost.

The router running the OSPF protocol can reach the FULL state after completing the LSDB synchronization.

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? (Multiple Choice)

Which of the following description about the Layer 2 Ethernet switch is incorrect?

Which of the following advantages does the router-on-a-stick approach achieve routing intercommunication between VLANs?