In the Established state, the BCP can exchange Update, Keepalive, Route-refresh, and Notification messages with the peer.

As shown in the following figure, if you do not want employees of department A have mutual visits, employees in department B can communicate with each other, but different departments cannot communicate with each other, and all employees can access the company's servers. To achieve this function through the MUX VLAN, the following statement is correct:

The name of the assertion mechanism in PIM-SM is:

The following output of a router, which of the following description of this information is correct?

Compared with the traditional STP, RSTP defines two different port roles. Which is correct? (Multiple choices)