R1 does not form an OSPF neighbor adjacency with R2. Which option would fix the issue?
A. R1 ethernetO/1 is shutdown. Configure no shutdown command.
B. R1 ethernetO/1 configured with a non-default OSPF hello interval of 25: configure no ip ospf hello-interval 25
C. R2 ethernetO/1 and R3 ethernetO/O are configured with a non-default OSPF hello interval of 25; configure no ip ospf hello-interval 25
D. Enable OSPF for R1 ethernetO/1; configure ip ospf 1 area 0 command under ethernetO/1
Answer:B
R1 does not form an OSPF neighbor adjacency with R2. Which option would fix the issue?
A. R1 ethernetO/1 is shutdown. Configure no shutdown command. B. R1 ethernetO/1 configured with a non-default OSPF hello interval of 25: configure no ip ospf hello-interval 25 C. R2 ethernetO/1 and R3 ethernetO/O are configured with a non-default OSPF hello interval of 25; configure no ip ospf hello-interval 25 D. Enable OSPF for R1 ethernetO/1; configure ip ospf 1 area 0 command under ethernetO/1
Explanation: Looking at the configuration of R1, we see that R1 is configured with a hello interval of 25 on interface Ethernet 0/1 while R2 is left with the default of 10 (not configured).