Question 100
On shared broadcast Ethernet Gi0/0, R1 uses 10.56.8.1/29 and R2 uses 10.56.8.18/29, with matching OSPF area, timers, and authentication. They fail to form adjacency. Which IP change fixes their subnet mismatch without duplicating R1’s address?
Explanation
Correct Answer
R1 10.56.8.1/29 is in 10.56.8.0/29; R2 10.56.8.2/29 is a different usable address in that same on-link subnet.
Incorrect Answers
This action does not correct the exact interface/OSPF mismatch shown in the scenario.
That explanation does not distinguish this option. “Configure R2 Gi0/0 as 10.56.8.18/30 without moving R1” is an alternative action, but it does not by itself establish the outcome required in this case.
That explanation does not distinguish this option. “Configure R2 Gi0/0 as 10.56.8.1/29, duplicating R1” is an alternative action, but it does not by itself establish the outcome required in this case.