What type of OSPF LSA is originated by ASBR routers to advertise external routes?

What type of OSPF LSA is originated by ASBR routers to advertise external routes?

• type 5
• type 2
• type 3
• type 1

Explanation: OSPF has many different LSA types.
type 1 - contains a list of directly connected interfaces
type 2 - only exists for multiaccess networks and includes DR router ID
type 3 - used by ABRs to advertise networks from other areas
type 4 - generated by ABRs to identify an ASBR and provides a route to it
type 5 - originated by ASBRs to advertise external routes

Exam with this question: CCNA 3 (v5.0.3 + v6.0) Chapter 9 Exam Answers
Exam with this question: Quiz - Advanced OSPF