In the OSPP network shown in the figure, area 1 is a Totally NSSA area, area 2 is a common area, and R4 imports the external route 10.0.4.4/32. The Router ID of each device is 10.0.XX, where X is the device number.

in the OSPF processes of R1 and R3. Which of the following descriptions is correct?

As shown in the figure, private network routing information is exchanged between PE1 and PE2 and their respective CEs through OSPF, and the same DomainlD is set on both PE1 and PE2. When routes are imported from BGP to OSPF on PE2, it is possible that Which of the following types of SAs are passed to CE2?

In the IS-IS IPV6 network shown in the figure, all routers have multi-topology enabled. Configure
"ipv6 default-route-advertise always level-1" in the IS-IS processes of R4 and R5.

By default, which of the following routers have a default route in their routing table? (Multiple choice)

A campus deploys OSPF to implement network interworking. The LSDB of R2 is shown in the figure. From this LSDB. it is possible to What information was obtained?

As shown in the figure, the MP_BGP neighbor relationship is established between PE1 and PE2 through the Loopback0 interface. After the configuration is completed, it is found that CE1 and CE2 cannot learn routes from each other. Which of the following options will cause this problem? (Multiple choice)