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  1. Home
  2. Huawei Certification
  3. H12-821_V1.0 Exam
  4. Huawei.H12-821_V1.0.v2026-02-20.q316 Dumps
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Question 226

See the following figure. RTA, RTB, RTC, and RTD are in the same AS and establish IBGP peer relationships through direct links. RTB an RTC are route reflectors (RRs), RTA and RTC are the RR clients of RTB, and RTB and RTD are the RR clients of RTC. If RTA advertises the route 10.1.1.0/24 to the BGP process, the Originator ID of the BGP route received by RTD is------------------.

Correct Answer:
1.1.1.1
Explanation:
The Originator ID in a BGP route represents the Router ID of the device that originally advertised the route into the BGP domain. Since RTA originates the route 10.1.1.0/24 into the BGP process, the Originator ID in the route received by RTD will be set to 1.1.1.1 .
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Question 227

In IGMPv1, querier selection depends on a multicast routing protocol, such as PIM. In IGMPv2 and IGMPv3, the interface with the largest IP address acts as the querier.

Correct Answer: A
Comprehensive and Detailed Step-by-Step Explanation:
IGMPv1 Querier Selection:
In IGMPv1, there is no built-in querier election mechanism. Querier selection depends on the multicast routing protocol (e.g., PIM).
IGMPv2 and IGMPv3 Querier Selection:
In IGMPv2 and IGMPv3, the router interface with thelargest IP addressin the multicast group is selected as the querier.
Correct Statement:
The statement accurately describes the querier selection mechanisms in IGMP versions.
References:
HCIA-Datacom Study Guide, Chapter: IGMP Querier Mechanism
Huawei Multicast Protocol Comparison
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Question 228

The networking diagram of a certain IS-IS is as shown in the figure.

According to the content analysis in the figure, which one of the following descriptions is wrong?

Correct Answer: C
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Question 229

The Open message of BGP is used to establish a peer connection. Which of the following is not the parameter information carried in the Open message?

Correct Answer: D
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Question 230

Which of the following statements about BFD operating modes are true?

Correct Answer: A,C,D
In asynchronous mode, BFD control packets are exchanged periodically to detect faults.
In demand mode, once the session is established, BFD stops sending periodic control packets and relies on external mechanisms to verify connectivity.
Asynchronous mode is the most commonly used mode. However, the Echo function is supported in asynchronous mode, making Option B incorrect .
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