Vendor: Huawei
Exam Code: H12-821
Exam Name: HCIP-Datacom-Core Technology V1.0
Certification: Huawei Certifications
Total Questions: 312 Q&A
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Updated on: Jun 16, 2026
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BFD control packets are encapsulated in UDP packets for transmission. What is the destination port number of multi-hop BFD control packets?
A. 4784
B. 3784
C. 5784
D. 2784
Which of the following statements regarding the stateful inspection firewall is true?
A. When the stateful inspection firewall checks packets, packets of one same connection are not correlated.
B. Because UDP is a connectionless protocol, so the stateful inspection firewall cannot match UDP packets with the status table.
C. The stateful inspection firewall only needs to match the first data packet against a rule, and the subsequent packets of the connection are matched directly in the state table.
D. The stateful inspection firewall needs to match the rules for each incoming packet.
A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?

A. The circuit level of S4/0/0 is Level-1.
B. S4/0/0 supports IPv6.
C. S4/0/0 sends IIH packets at the interval of 30s.
D. The cost of S4/0/0 is 20.
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