Cisco Certified Network Associate (CCNA) Practice Exam

What type of LSA is generated by each OSPFv3 router in its area?

1. Type 1 LSA (Router LSA)

2. Type 2 LSA (Network LSA)

3. Type 3 LSA (Inter-Area Prefix LSA)

4. Type 4 LSA (ASBR Summary LSA)

The correct answer is: Type 1 LSA (Router LSA)

The correct answer is that each OSPFv3 router generates a Type 1 LSA, also known as a Router LSA. This type of LSA contains information about the state of the router's interfaces and other parameters relevant to OSPFv3 operation. Specifically, it advertises the links that the router has with its directly connected neighbors within the same OSPF area. This information is critical because it helps to build a complete view of the topology, which is essential for OSPF to create a loop-free routing structure. Type 1 LSAs are flooded within the router’s OSPF area, ensuring that all routers in the area have a consistent and synchronized view of the network's topology. This is foundational for the OSPF protocol's link-state mechanism, where each router uses its knowledge of the network to compute the best paths based on the link-state database it accumulates through the LSAs. In contrast, other types of LSAs serve different purposes: Type 2 LSAs are generated by the designated router (DR) on a multi-access network to represent all routers on that segment, while Type 3 LSAs are used to summarize routes between areas. Type 4 LSAs are specifically used to