In the network shown in the figure, R1, R2, R4, and R5 run IS-IS, and the area number is 49.0001. R3 and R6 run IS-IS, and the area number is 49.0002. In AS 65000, R1, R3, R4, and R6 all establish…

In the network shown in the figure, R1, R2, R4, and R5 run IS-IS, and the area number is 49.0001. R3 and R6 run IS-IS, and the area number is 49.0002. In AS 65000, R1, R3, R4, and R6 all establish IBGP neighbor relationships with R2 and R5, of which R2 and R5 are RRs. R1, R4, R3, and R6 are clients, and IBGP neighbor relationships are all established using the Loopback0 interface. The IP address of the Loopback0 interface of each device is 10.0.XX/32. The Router ID is 10.0.XX, where X is the device number. R1 and R4 introduce the external network 192.168.1.0/24 into BGP through import, and R3 and R6 introduce the external network 192.168.2.0/24 into BGP through import. Which of the following descriptions are correct by default? (Multiple choice)