Which two reasons would cause an LSP to break between two PE routers? (Choose two.)

Refer to the exhibit. Routers R1 and R2 exchange routes to each other's loopback through OSPF. Telnet traffic must be blocked from R2 Lo0 to R1 Lo2. Which configuration resolves the issue?

Refer to the exhibit. OSPF adjacency is broken between router A and router B. Which configuration on router B resolves the issue?

An engineer configures PBR on R5 and wants to create a policy that matches traffic destined toward 10.10.10.0/24 and forward 10.1.1.1. The traffic must also have its IP precedence set to 5.
All other traffic should be forward toward 10.1.1.2 and have its IP precedence set to 0.
Which configuration meets the requirements?

Refer to the exhibit. An administrator configures a router to stop using a particular default route if the DNS server 8.8.8.8 is not reachable through that route. However, this configuration did not work as desired and the default route still works even if the DNS server 8.8.8 8 is unreachable.
Which two configuration changes resolve the issue? (Choose two.)