Huawei Certified Network Professional – Routing and Switching v2 (HCNP-RS) — Question 26

Which statements about OSPF packets are true? (Choose three.)

Answer options

• A. Hello packets can be sent after OSPF is enabled on an interface.
• B. LS Request packets are sent only after an adjacency is established.
• C. LS Update packets contain detailed LSA information for LSDB synchronization.
• D. LS Update packets are sent only after an adjacency is established.

Correct answer: A, B, C

Explanation

Option A is correct because Hello packets are indeed sent once OSPF is activated on an interface to discover neighbors. Option B is also accurate since LS Request packets are only sent after an adjacency is established to request LSAs. Option C is true as LS Update packets do carry detailed LSA information for the purpose of synchronizing the Link-State Database (LSDB). Option D is incorrect because LS Update packets can be sent under specific conditions, not exclusively after an adjacency is established.