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Free H12-821_V1.0 Exam Braindumps (page: 16)

Page 15 of 56
PDF with 219 Questions

A large shopping mall configures a VLAN pool to prevent network performance deterioration caused by potentially large broadcast domains. A network engineer runs the display vlan pool name STA command to check information about the VLAN pool. The following command output is displayed:

<AC> display vlan pool name STA Name : STA Total : 2 Assignment: hash Threshold Notify Count: 3 Threshold Notify time(min): 3 VLAN ID : 2 4

Which of the following statements are true?

  1. The VLANs with the IDs of 2 and 4 are added to the VLAN pool.
  2. The total number of VLAN pools is 2.
  3. The name of the VLAN pool is STA.
  4. The VLAN pool uses the even VLAN assignment algorithm.

Answer(s): A,C

Explanation:

The command output confirms that the VLANs with IDs 2 and 4 are part of the VLAN pool named "STA." The VLAN pool concept is used to allocate VLANs dynamically to devices or subnets, which reduces broadcast domain size and improves network efficiency. The total number of VLAN pools is unrelated to this output, and the assignment algorithm (hash or even) is not explicitly mentioned in the output. Huawei VLAN pool management references align with this analysis .



STAs stay on different subnets before and after Layer 3 roaming. To enable the STAs to access the original network after roaming, network engineers need to configure user traffic to be forwarded to the original subnet over a CAPWAP tunnel.

  1. TRUE
  2. FALSE

Answer(s): A

Explanation:

In Layer 3 roaming scenarios, STAs (stations) remain on different subnets before and after roaming. To ensure that user traffic reaches the original subnet, it must be tunneled back over a CAPWAP tunnel. This technique prevents disruptions in communication and enables seamless roaming. Huawei's Layer 3 roaming design guidelines emphasize the use of CAPWAP tunnels for user traffic forwarding .



The typical characteristics of the AI era are that it focuses on data, explores data value, and improves AI efficiency. Therefore, the core requirement of AI for data center networks is speed, meaning low latency.

  1. TRUE
  2. FALSE

Answer(s): A

Explanation:

AI-driven networks focus on maximizing efficiency by minimizing latency to enhance data processing and decision-making speed. The AI era emphasizes leveraging large data volumes and ensuring rapid data center interconnectivity. This makes low latency a critical requirement for AI-ready data center networks, as highlighted in Huawei's AI and data center network optimization materials .



Which of the following statements about the forwarding plane of a switch is false?

  1. Provides high-speed and non-blocking data channels.
  2. Can encapsulate and decapsulate packets.
  3. Can collect packet statistics.
  4. Consists of main control boards and interface boards.

Answer(s): D

Explanation:

The forwarding plane of a switch consists of data forwarding hardware, such as line cards or forwarding engines, and is responsible for tasks like encapsulating/decapsulating packets, providing high-speed data channels, and collecting packet statistics. However, main control boards are part of the control plane, not the forwarding plane. This distinction ensures a separation of data forwarding and control functionalities .






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