Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 142

Which of the following statements regarding the DR in an OSPF network are correct? (Choose two)

Answer options

• A. There must be at least one DR in an OSPF area.
• B. A DR must be elected among the routers through the negotiations that are defined by OSPF protocol.
• C. Only the router with highest priority will be elected as DR.
• D. Only NBMA or Broadcast networks need to elect DR.

Correct answer: B, D

Explanation

Option B is correct because the election of a DR involves negotiations among the routers in accordance with the OSPF protocol. Option D is also correct since only NBMA and Broadcast networks require the election of a DR, whereas options A and C are incorrect because a single DR is not mandatory in all OSPF areas and DR election can involve more than just the highest priority router.