Pass4Test一連の調査と研究の結果、教科書の詳細な研究に合格することを希望する学生は、しばしば怠け者であり、学習が怠けていることがわかりました（H12-811_V2.0テスト教材）。 一部の学生は、教科書で理解するのが難しい内容を読むときに頭痛を感じることさえあります。 私たちの研究資料は、実際のテスト環境をシミュレートする模擬試験製品の研究に焦点を当てたシニア業界の専門家によって構成された優れた試験レビュー製品です（H12-811_V2.0準備急流）。 専門家は、異なる専攻間の学習方法と試験モデルの違いを十分に検討し、最終的に完全なレビューシステムを形成しました。 HCIA-Datacom V2.0一連の演習、エラーの修正、および自己改善の後、Huawei H12-811_V2.0試験に合格するのに役立ちます。
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Huawei H12-811_V2.0学習教材を選んだら、H12-811_V2.0試験に落ちた人は少ないです。何故というと、H12-811_V2.0学習教材の合格率が高いからです。H12-811_V2.0学習教材は多くの人から好評をもらいました。そのほかに、H12-811_V2.0学習教材は三種類があります。自分の好みによって選択できます。とても便利で、使い安いです。
質問 # 79
Which of the following statements are true about the Python code shown below? (Select all that apply) import paramiko import time ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('192.168.1.254', username='python', password='Huawei@123') channel = ssh.invoke_shell() channel.send('screen-length 0 temporary\n') time.sleep(1) output = channel.recv(65535).decode('utf-8') print(output) ssh.close()
正解：A、B、C、D
解説：
All four statements are correct. The code uses the Paramiko library to automate SSH login to a network device. import paramiko and import time load the Python modules required for SSH communication and delay control, so option C is correct. The statement ssh = paramiko.SSHClient() creates an SSH client object, and ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) allows the client to accept an unknown host key automatically in this example scenario.
The command ssh.connect('192.168.1.254', username='python', password='Huawei@123') establishes an SSH connection to the target device, so option B is correct. Then channel = ssh.invoke_shell() opens an interactive shell channel, which is commonly used to send CLI commands and receive output just as an administrator would in a terminal session, making option D correct. The command channel.send('screen-length 0 temporary\n') disables page-by-page output for the current session, which is useful in network automation. Finally, ssh.close() closes the SSH session and releases the connection, so option A is correct. HCIA-Datacom automation knowledge often uses Paramiko examples to demonstrate basic Python-based device O&M.
質問 # 80
On the switched network shown in the figure, STP is enabled on all devices. SW1 is the root bridge. The port costs are shown in the figure. Other parameters retain the default values. After the network is stable, which of the following ports are alternate ports? (Choose all that apply.)
正解：A、B
解説：
To find the alternate ports, we first identify the quickest path to the root bridge, SW1, for every other switch. SW2 reaches the root directly through its top port with a cost of 30. SW3 has the fastest direct path with a cost of 10. SW4 calculates that going through SW3 is cheaper than going directly to the root, giving it a total root cost of 40. SW5 finds its best path by going through SW4, resulting in a total root cost of 50. All of these preferred entry points become Root Ports.
Next, we look at the remaining open links to see which ports must be blocked to prevent loops.
On any connection between two switches, the switch that is further away from the root bridge loses the battle and has to block its port, turning it into an Alternate Port.
When comparing the cross-link between SW1 and SW4, SW1 is the root bridge itself, so SW4 loses this matchup and blocks its GE1/0/3 port. Looking at the link between SW3 and SW5, SW3 is much closer to the root bridge with a cost of 10 compared to SW5's cost of 50, which forces SW5 to block its GE1/0/1 port. On the remaining links, SW2 forces SW4 to block its GE1/0/2 port, and SW3 forces SW2 to block its GE1/0/3 port.
Matching these blocked paths to the given choices leaves us with GE1/0/3 of SW4 and GE1/0/1 of SW5 as the alternate ports.
質問 # 81
The MAC address table of SW1 is shown in the figure. If SW1 receives a data frame with the destination MAC address 0050-5600-0003 from PC1, through which of the following interfaces does SW1 send the data frame?
正解：A、C、D
解説：
The MAC address table in the exhibit contains learned entries for 0050-5600-0001 on GE1/0/1 and 0050-
5600-0002 on GE1/0/2, but there is no entry for destination MAC 0050-5600-0003. A frame arriving from PC1 on GE1/0/1 with an unknown unicast destination is therefore flooded within the VLAN. Huawei Ethernet switching behavior sends the unknown unicast frame through all other eligible Layer 2 interfaces in that VLAN, while never sending it back through the ingress interface. In the shown topology, the remaining interfaces are GE1/0/2, GE1/0/3, and GE1/0/4. Consequently, the frame is sent through options A, D, and B respectively. GE1/0/1, option C, is excluded because it is the ingress interface from which SW1 received the frame. If SW1 later learns 0050-5600-0003 on a specific port, subsequent unicast frames can be forwarded only through that learned port. For the empty destination entry shown, the verified answer is A, B, and D.
質問 # 82
The administrator runs the interface Eth-Trunk 1 command to create Eth-Trunk 1 on SW1 and SW2. After the network is stable, the administrator runs the display interface brief command on SW1, and finds that Eth- Trunk 1 is Down, the states of its member interfaces are normal, and the configuration on SW1 is correct. The possible cause is that the member interfaces on SW2 are not added to Eth-Trunk 1.
正解：B
解説：
The uploaded key marks this statement TRUE, but the Huawei VRP operating behavior makes FALSE the technically correct answer as the question is written. Creating Eth-Trunk 1 with the interface Eth-Trunk 1 command does not, by itself, enable LACP. The default Eth-Trunk working mode is manual load balancing on the relevant VRP platforms. In manual mode, the local switch does not depend on LACP negotiation with the remote switch to decide whether locally added, physically Up member interfaces can make the aggregation operational. If SW1 ' s member interfaces are physically normal and correctly added to Eth-Trunk
1, failing to add the corresponding SW2 interfaces to its Eth-Trunk can certainly break end-to-end forwarding, but it is not in itself a sufficient explanation for the local Eth-Trunk on SW1 being Down. In LACP mode, missing peer membership can prevent correct aggregation because LACPDUs are not exchanged as expected.
Since LACP mode is not specified here, option B is the verified answer.
質問 # 83
R1 has the following configurations:
[R1] radius-server template 1
[R1-radius-1] radius-server authentication 10.1.6.6 1812
[R1-radius-1] radius-server accounting 10.1.6.6 1813
[R1-radius-1] radius-server shared-key cipher YsHsjx_202206139
[R1-radius-1] quit
[R1] aaa
[R1-aaa] authentication-scheme auth1
[R1-aaa-authen-auth1] authentication-mode radius
[R1-aaa-authen-auth1] quit
[R1-aaa] accounting-scheme acc1
[R1-aaa-accounting-acc1] accounting-mode radius
[R1-aaa-accounting-acc1] quit
[R1-aaa] domain huawei.com
[R1-aaa-domain-huawei.com] authentication-scheme auth1
[R1-aaa-domain-huawei.com] accounting-scheme acc1
[R1-aaa-domain-huawei.com] radius-server 1
[R1-aaa-domain-huawei.com] quit
[R1-aaa] quit
Which of the following statements is true?
正解：D
解説：
Option D is correct. The AAA configuration binds the domain huawei.com to the authentication scheme auth1 , which uses RADIUS as the authentication mode, and to the accounting scheme acc1 , which also uses RADIUS. Therefore, when a user logs in with a user name in the format hcia-datacom@huawei.com , the device parses the suffix @huawei.com, matches the domain, and applies the configured RADIUS authentication method.
Option A is false because RADIUS does support accounting , and UDP port 1813 is commonly used for that purpose. Option B is false because a separate authorization server IP is not strictly required in this context; RADIUS can carry authorization attributes together with authentication/accounting processing depending on server behavior and device configuration. Option C is false because standard RADIUS communication uses UDP , not TCP, with authentication typically on port 1812 and accounting on 1813 . HCIA-Datacom teaches domain-based AAA processing as a key concept, where the user name suffix determines which authentication, authorization, and accounting policies are applied on the NAS device.
質問 # 84
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