Introduction to OSPF Stub Areas

Hello Boris

The question is not completely clear, as it does not clarify what it means by “prevent type 4 and type 5”. Does it mean that those LSA types should not exist within the stub area? If so, then all of them should be correct. Take a look at the following table:

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However, if we take the question to mean “prevent ONLY type 4 and type 5 LSAs and not Types 1, 2 and 3”, then the answer would be NSSA area and Stubby area as @fugazz suggested. The important thing here is to understand the functionality of the LSAs and apply that to any question that may arise in the exam.

I hope this has been helpful!

Laz

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