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Refer to the diagram. The network is running OSPF. Which of the following is most likely the cause that R1 and R2 are not able to form an adjacency? MISSING PART OF EXHIBIT ANSWER IS HELLO TIMER ARE DIFFERENT ON BOTH ROUTERS

The loopback addresses are on different subnets.

The OSPF process ID is different on both routers.

The command "summary-address network" is configured on both routers.

The values of the hello timer are different on both routers.



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