OSPF chooses routes in which order, regardless of route's adminstrative distance and metric?

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#1

OSPF chooses routes in which order, regardless of route’s adminstrative distance and metric? (choose six)
A. Intra-Area (O)
B. Inter-Area (O IA)
C. External Type 1 (E1)
D. External Type 2 (E2)
E. NSSA Type 1 (N1)
F. NSSA Type 2 (N2)

Correct Answer: ABCDEF

Explanation:
Regardless of a route’s metric or administrative distance, OSPF will choose routes in the following order:

Intra-Area (O)
Inter-Area (O IA)
External Type 1 (E1)
External Type 2 (E2)
NSSA Type 1 (N1)
NSSA Type 2 (N2)

To demonstrate this, take the following topology: