DRAG DROP
Click and drag the associated set of OSPF LEAs on the left to the corresponding area type on the right where this set of LEAs may be seen.

Explanation:
LSA 1, 2, 3, 4, 5 – Backbone or transitLSA 1, 2, 3 – StubLSA 1, 2 – Totally StubbyLSA 1, 2, 3, 7 -NSSALSA 1, 2, 7 – Totally NSSA