Which of the following LSA types describes topology information that, when changed, requires a router in the same area to perform an SPF calculation?

Which of the following LSA types describes topology information that, when changed,
requires a router in the same area to perform an SPF calculation? (Choose two.)

Which of the following LSA types describes topology information that, when changed,
requires a router in the same area to perform an SPF calculation? (Choose two.)

A.
1

B.
2

C.
3

D.
4

E.
5

F.
7

Explanation:
OSPF builds the SPF tree based on the topology information Type 1 and
Type 2 LSAs. Changes therefore require another SPF run. Changes to the other LSA
types do not require an SPF calculation.



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