Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 58

The OSPF database of a router shows LSA types 1, 2, 7, and 3 default router only. Which type of area is this router connected to?

Answer options

• A. NSSA totally stub
• B. stub area
• C. totally stubby area
• D. NSSA

Correct answer: A

Explanation

The correct answer is A, NSSA totally stub, because this type of area allows external routes (LSA type 7) while filtering out most types of OSPF routes. Options B and C, stub area and totally stubby area, do not support LSA type 7, and option D, NSSA, does not specify that it is totally stub, which is essential for this scenario.