In order to quickly detect network link failures, which of the following protocols can we deploy?

The ORF function of BGP can control the routing entries sent by neighbors. In order to achieve this purpose, the BGP router will send the list of routes to be filtered to the neighbor. Which tool is generally used to send the list to the neighbor?

As shown in the figure, Client1 and Client2 serve as clients of RR1 and RR2 at the same time, RR1 and RR2 are in the same Cluster, and R1 imports 10 routes. Assuming that the BGP configuration is correct and all neighbor relationships have been established, how many routing entries will Client 2 receive in the end?

Which of the description of business priority in DSCP is correct?

Network administrator A wants to use ACL to match only the four routing entries 1, 3.5, and 7 in the figure. How many ACL rules does network administrator A need to configure at least?