On an MPLS network, an LSR ID uniquely identifies an LSR. An LSR ID defaults to the IP address of a physical interface on a device and can be manually set to a loopback interface address.

By default, the IS-IS LSP refresh interval is which of the following?

Both VLAN aggregation and MUX VLAN are deployed in a certain enterprise network, and the interfaces connecting the switches to the terminals are all Access interfaces.

Then please match PC1~PC4 with the accessible hosts or servers in the scenario shown in the figure one by one (Note: matching the host itself is not allowed, such as PC1 cannot match PC1)

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. Inside AS65000, R1, R3, R4, and R6 all establish IBGP neighbor relationships with R2 and R5, of which R2 and R5 are RRs and R1, R4, R3, and R6 are clients. IBGP neighbor relationships are all established using the Loopback0 interface. The IP address of the Loopback0 interface of each device is 10.0.X.X/32, and 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 the import method, and R3 and R6 introduce the external network 192.168.2.0/24 into BGP through the import method.

By default, which of the following descriptions are correct? (Multiple choice)

In the OSPF network shown in the figure, the link cost value has been marked in the figure. R1 has enabled OSPF IP FRR and configured the "maximum load-balancing 8" command in the OSPF process. If a service reaches 10.0.3.3/32 through the path R1-R5- R3, which of the following is the backup outbound interface of the service?