Which of the following descriptions of OSPF areas are correct? (Multiple choice)

What kind of message does the OSPF protocol use to send LSA to neighbors?

VRP supports OSPF multi-process. If the process number is not specified when 0SPF is enabled, the process number used by default is ().

The administrator has configured the AR2200 as shown in the figure, then which of the following description of the configuration information is correct?

Refer to the route-in-a-stick configuration in the figure below, it can be judged that the administrative department and the financial department can communicate with each other even if the ARP proxy is not enabled on the R1 sub-interface.