What are two reasons for this behavior?

Posted by: Pdfprep Category: JN0-691 Tags: , ,

An OSPF adjacency is not forming between two routers directly connected using SONET/SDH interfaces.

What are two reasons for this behavior? (Choose two.)
A . The data-link connection is down.
B . The network type on both routers is point-to point.
C . The IP subnets on both routers are different.
D . The subnet masks on both routers are different.

Answer: A,C

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