JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 55

You have an OSPF NSSA area that is also receiving IS-IS routes on the ASBR.
In this scenario, which LSA type is used to announce external IS-IS routes?

Answer options

• A. Type 7
• B. Type 8
• C. Type 1
• D. Type 4

Correct answer: A

Explanation

The correct answer is Type 7, as it is specifically used in OSPF NSSA areas to carry external routes. Type 8 is not applicable for this scenario, and Types 1 and 4 are used for intra-area and ASBR summary routes, respectively, which do not pertain to announcing external IS-IS routes.