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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | HCIA-Datacom V2.0 |
| Exam Number: | H12-811_V2.0 |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 60 |
| Exam Format: | Single-answer Question, Drag and Drop Item, Short Response Item, True or False, Multiple-answer Question |
| Exam Price: | 200 USD |
| Related Certifications: | HCIP-Datacom HCIE-Datacom |
| Passing Score: | 600/1000 |
| Recommended Training: | Huawei HCIA-Datacom Training Course |
| Exam Registration: | Pearson VUE Registration Huawei Official Certification |
| Sample Questions: | Huawei H12-811_V2.0 Sample Questions |
| Exam Way: | Online proctored or onsite at Pearson VUE test centers |
| Pre Condition: | No mandatory prerequisites |
| Official Syllabus URL: | https://e.huawei.com/en/training/certification/exam/h12-811_v2.0 |
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NEW QUESTION # 97
Which of the following hosts are reachable to the host at 192.168.1.200/27 at Layer 2? (Select all that apply)
Answer: A,C,D
Explanation:
A /27 subnet mask is 255.255.255.224, which means each subnet contains 32 IP addresses. The subnet increments in blocks of 32 in the last octet: 0, 32, 64, 96, 128, 160, 192, 224. The address 192.168.1.200/27 belongs to the subnet 192.168.1.192/27.
For this subnet, the network address is 192.168.1.192, the broadcast address is 192.168.1.223, and the valid host range is from 192.168.1.193 to 192.168.1.222. Therefore, 192.168.1.221/27, 192.168.1.193/27, and
192.168.1.222/27 are all valid host addresses in the same subnet and are reachable at Layer 2 without routing.
That makes A, C, and D correct.
Option B is not correct because 192.168.1.192/27 is the network address of the subnet and cannot be assigned to a host by default. This question checks IP subnetting and the ability to identify valid hosts within the same broadcast domain.
NEW QUESTION # 98
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()
Answer: A,B,C,D
Explanation:
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.
NEW QUESTION # 99
The following command is configured on the VTY interfaces of R1:
[R1-ui-vty0-4] protocol inbound all
In this case, FTP, Telnet, and SSH users can all use the five VTY interfaces.
Answer: A
Explanation:
VTY interfaces provide remote terminal sessions to the device. The command protocol inbound all allows the interactive remote-login protocols supported by that VTY implementation, notably Telnet and SSH/STelnet.
FTP is not a VTY terminal-login protocol. FTP is a file-transfer service that uses its own server/client process, TCP sessions, authentication, and file system permissions; enabling FTP service does not make an FTP user consume a VTY terminal line in the same manner as a Telnet or SSH CLI session. Therefore, even though the word all broadens the VTY ' s permitted terminal access protocols, it does not mean that FTP users log in through those five VTY interfaces. Huawei troubleshooting documentation specifically treats protocol inbound all as satisfying Telnet and SSH access requirements. The statement incorrectly groups FTP with the VTY login protocols and claims that all three types of users can use the five VTY interfaces. That conclusion is false. The verified answer is B.
NEW QUESTION # 100
Rl has the following configurations:
[R1] aaa
[R1-aaa] authentication-scheme auth1
[R1-aaa-authen-authl] authentication-mode radius local
[R1-aaa-authen-authl] quit
According to the preceding information. Assume that R1 is properly connected to the RADIUS server. When a user accesses R1, R1 first performs RADIUS authentication on the user. If the RADIUS server sends an authentication failure message to R1, R1 then performs local authentication on the user.
Answer: A
Explanation:
The authentication-mode radius local configuration defines an authentication sequence in which RADIUS is attempted first and local authentication is used as a fallback under the conditions defined by Huawei AAA processing. A critical distinction exists between a RADIUS service being unavailable and a RADIUS server explicitly rejecting the credentials. If the RADIUS server is unreachable, times out, or otherwise cannot perform the authentication service, local authentication may be used as the backup method. However, when the device successfully contacts the RADIUS server and receives an explicit authentication failure or Access- Reject response, that is a definitive authentication result rather than a server-unavailable condition. The device does not simply bypass the rejection and retry the same user against the local database, because doing so would undermine centralized authentication policy. The question explicitly states that R1 is properly connected to the RADIUS server and that the server sends an authentication failure message. Therefore, the claimed fallback to local authentication does not occur in this situation. The statement is FALSE and option B is correct.
NEW QUESTION # 101
The continuous development and innovation of upper-layer services pose higher requirements on general-purpose computing data center networks. Which of the following requirements can be met by deploying M-LAG and Eth-Trunk? (Choose all that apply.)
Answer: B,C,D
Explanation:
M-LAG improves network device redundancy and ensures service continuity in case of device or link failures, which directly supports high availability. Eth-Trunk aggregates multiple physical links into one logical link, increasing total transmission capacity and providing higher aggregated bandwidth. Together, M-LAG and Eth-Trunk also support seamless Layer 2 mobility and VM migration by maintaining consistent forwarding across dual-homed connections in data center environments. Elastic scalability is more related to architecture expansion and cloud resource elasticity rather than directly provided by M-LAG or Eth-Trunk mechanisms.
NEW QUESTION # 102
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