Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 21

Which ospf area prevent LSA type 4, LSA type 5? (Choose two.)

Answer options

• A. Not so stubby
• B. Total stubby
• C. Stubby area
• D. Totally Not-So-Stubby Area

Correct answer: B, C

Explanation

The correct answers are B (Total stubby) and C (Stubby area) because both these area types are designed to suppress LSA type 4 and LSA type 5, thereby limiting external routing information. Options A (Not so stubby) and D (Totally Not-So-Stubby Area) allow for external routes and do not block these LSA types.