HCIP-Datacom-Core Technology V1.0

Here you have the best Huawei H12-821 practice exam questions

You have 12 total questions to study from
Each page has 5 questions, making a total of 3 pages
You can navigate through the pages using the buttons at the bottom
This questions were last updated on October 22, 2025
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Question 1 of 12

BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?

4784

2784

5784

3784

Correct Answer: A

Question 2 of 12

Which of the following statements regarding BGP peer are false? (Choose all that apply.)

BGP peers exchange link state information.

A UDP connection must be established before BGP relationships are established.

BGP routers support automatic neighbor discovery.

BGP peers must be configured with MD5 authentication.

Correct Answer: A, B, C

Question 3 of 12

When a routing policy is used to filter routes, which of the following route prefixes will be denied by the IP prefix below? (Choose all that apply.)
[HUAWEI]ip ip-prefix aa index 10 deny 1.1.1.1 24
[HUAWEI]ip ip-prefix aa index 20 permit 1.1.1.1 32

1.1.1.2/16

1.1.1.1/24

1.1.1.1/26

1.1.1.1/32

Correct Answer: B

Question 4 of 12

Which of the following statements regarding OSPF route summarization commands are true? (Choose all that apply.)

The asbr-summary command is executed in the OSPF view.

The abr-summary command is executed in the OSPF area view.

advertise is the default parameter of the abr-summary command. That is, if not-advertise is not specified in the abr-summary command, the advertise parameter takes effect by default,

not-advertise is the default parameter of the abr-summary command. That is, if advertise is not specified in the abr-summary command, the not-advertise parameter takes effect by default.

Correct Answer: B, C

Question 5 of 12

Which of the following statements regarding OSPF is true?

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

OSPF performs LSDB update every 30 minutes.

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

OSPF floods an LSU packet at an interval of 5s.

Correct Answer: C