Free Huawei H12-821_V1.0 Exam Questions

Become Huawei Certified with updated H12-821_V1.0 exam questions and correct answers

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Total 332 Questions | Updated On: Jul 29, 2025

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Question 1

Which of the following statements regarding OSPF is true?

A : OSPF does not have an acknowledgement mechanism. Therefore, OSPF relies on the upper-layer protocol, TCP, for acknowledgement.

B : OSPF performs LSDB update every 30 minutes.

C : OSPF uses the Bellman-Ford algorithm, and each router independently runs this algorithm.

D : OSPF floods a LSU packet at an interval of 5s.

Answer: B

Question 2

Which of the following statements regarding multicast MAC addresses are false?

A : One multicast MAC address maps to 32 multicast IP addresses.

B : One multicast MAC address maps to only one multicast IP address.

C : The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower 23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

D : A multicast MAC address identifies receivers of a multicast group on the data link layer.

Answer: B

Question 3

Similar to the OSPF DR, the IS-IS DIS needs to be elected on a broadcast network. However, the OSPF DR is preemptive by default, whereas the IS-IS DIS is not preemptive by default.

A : TRUE

B : FALSE

Answer: A

Question 4

Which of the following statements regarding multicast MAC addresses are false?

A : One multicast MAC address maps to 32 multicast IP addresses.

B : One multicast MAC address maps to only one multicast IP address.

C : The high 24 bits of the multicast MAC address are 0x01005E, the 25th bit is fixed to 1, and the lower 23 bits of the MAC address map to the lower 23 bits of the multicast IP address.

D : A multicast MAC address identifies receivers of a multicast group on the data link layer.

Answer: B

Question 5

When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below?

A : 1.1.1.1/26

B : 1.1.1.2/16

C : 1.1.1.1/32

D : 1.1.1.1/24

Answer: B,D

Page: 1 / 67

Total 332 Questions | Updated On: Jul 29, 2025

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