Huawei Certified ICT Professional – Data Center Network (HCIP-DCN) — Question 15

Which of the following statements regarding DR/BDR are false? (Choose all that apply.)

Answer options

• A. In a broadcast network, DR and BDR must be elected. A broadcast network without a DR or BDR cannot operate normally.
• B. All DR others establish neighbor relationships with DR and BDR only.
• C. DR others listen on the multicast address 224.0.0.5.
• D. DR others listen on the network address 224.0.0.6.

Correct answer: A, D

Explanation

Option A is incorrect because while a DR and BDR are typically elected in a broadcast network, it is possible for a network to operate without them, albeit in a less efficient manner. Option D is also false since DR others actually listen on the multicast address 224.0.0.5, not 224.0.0.6, which is reserved for the DR itself.