JNCIS-SP: Juniper Networks Certified Specialist – Service Provider Routing (2023) — Question 46

Which two ISA types are permitted in OSPF totally stubby areas? (Choose two.)

Answer options

• A. Type 3
• B. Type 7
• C. Type 5
• D. Type 1

Correct answer: A, D

Explanation

In OSPF totally stubby areas, only Type 3 and Type 1 ISAs are permitted. Type 3 ISAs are summary routes for inter-area routes, while Type 1 ISAs are intra-area routes. Type 5 and Type 7 ISAs are not allowed in totally stubby areas, as they provide external route information that is not needed.