If network reconstruction in a project may affect services running on the live network, the implementer needs to formulate strict implementation process regulations and risk prevention measures. Such projects are usually defined as migration projects.

Which of the following authorization items is not required for risky operations?

A large-scale network migration project can be divided into multiple small migration tasks that are relatively independent but also associated with each other.

After finding that the OSPF configuration on a router is incorrect, you logged in to the router to check the OSPF configuration. Then you found that the association between OSPF and BFD was also incorrect. Therefore, you changed the OSPF and BFD configuration. Which of the following troubleshooting methods is used in this process?

In network design, a redundant network topology can be used to provide higher reliability for customer services. Which of the following topologies can be used to provide redundancy? (Multiple Choice)