单项选择题
A. Router RTA is the BDR
B. Router RTA is directly connected to interface 192.168.45.1
C. Neighbor 192.168.45.1 has changed its OSPF priority number
D. Router RTA and neighbor 192.168.45.2 are exchanging OSPF LSAs
单项选择题 Refer to the exhibit. Which statement is true about the configuration? （）
单项选择题 An administrator types in the command router ospf 1 and receives the er ror message: "OSPF process 1 cannot start." (Output is omitted.) What should be done to correctly set up OSPF？（）
多项选择题 Open Shortes t Path First (OSPF) is a routing protocol developed for Internet Protocol (IP) networks by the Interior Gateway Protocol (IGP) working group of the Internet Engineering Task Force (IETF). Which two statements best describe the OSPF link - state routing pro tocol?（）
