Huawei Certified ICT Associate – Data Center Network (HCIA-DCN) — Question 81

Which of the following statements are true about the OSPF neighbor status? (Choose all that apply.)

Answer options

• A. The master/slave relationship of OSPF is formed in the ExStart state.
• B. After LSDB synchronization is completed, the router state changes to Full.
• C. The sequence number of DD packets is determined in the Exchange state.
• D. In the Exchange state, routers send DD packets that briefly describe link state information to each other to describe the content of the local link state database (LSDB).

Correct answer: A, B, D

Explanation

The correct statements are A, B, and D. A is true as the master/slave relationship is indeed formed in the ExStart state. B is correct because the router does change to Full after LSDB synchronization. D accurately describes the function of DD packets in the Exchange state. C is incorrect because the sequence numbers of DD packets are actually determined during the ExStart state, not the Exchange state.