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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Exam is a certification exam that is designed to test the knowledge and skills of network engineers in the field of data communication. H12-891_V1.0 exam is offered by Huawei Technologies Co. Ltd., a multinational technology company that specializes in designing and manufacturing telecommunications equipment and consumer electronics.
Huawei HCIE-Datacom V1.0 Sample Questions (Q131-Q136):
NEW QUESTION # 131
About multi-instance CE (Multi-VPN-Instance CE, MCE). What is the error described below?
- A. The MCE vs. PE direction must have multiple physical links to achieve isolation between different VPN instances
- B. MCE-enabled devices can access multiple VPI instances in BGP/RPLS IPVPN applications, reducing user network equipment investment
- C. Users who connect to the same MCE but are not part of a VPN instance cannot access each other
- D. On the MCE device, you need to create their own routing tables for different VPNs and bind to the corresponding interface
Answer: A
NEW QUESTION # 132
The command to adjust the LINK cost value for the IS-IS interface is ?( Radio)
- A. ISIS timer hello
- B. ISIS cost
- C. lSIS circuit type
- D. ISIS circuit level
Answer: B
NEW QUESTION # 133
Python Paramiko implements the SSH protocol. In the Python Paramiko module, which of the following classes is used to create SFTP sessions and perform remote file operations?
- A. Packetizer class
- B. Channel class
- C. Transport class
- D. SFTPClient class
Answer: D
Explanation:
Comprehensive and Detailed Explanation:
# Paramiko is a Python library that provides SSH and SFTP functionality.# The SFTPClient class is specifically designed for SFTP (Secure File Transfer Protocol) operations.
# How It Works:
* A Transport session is established using Transport().
* An SFTP session is created using SFTPClient.from_transport().
* File operations (upload/download) are performed via SFTP methods.
# Why Not Other Options?# (A) Packetizer class # Handles low-level SSH message processing, not SFTP.
# (C) Channel class # Creates SSH channels, not SFTP sessions.# (D) Transport class # Establishes SSH connections, but does not perform file operations.
# Reference: Huawei HCIE Datacom - Python Paramiko and SFTP Implementation
NEW QUESTION # 134
Which of the following statements is incorrect about the user authentication points on the network?
- A. When user authentication points are moved from the access layer to the aggregation layer, MAC address authentication for users may fail.
- B. Moving user authentication points from the access layer to the aggregation or core layer greatly reduces the number of user authentication points, thereby effectively mitigating the pressure on the AAA server.
- C. Deploying user authentication points at the access layer has both advantages and disadvantages when compared to doing so at the aggregation or core layer. Policy association can be applied if user authentication points are deployed at the access layer.
- D. Deploying user authentication points at the access layer achieves granular permission management and high network security.
Answer: A
Explanation:
Understanding User Authentication Points in a Network
Authentication points can be deployed at different network layers based on security and scalability needs:
# Access Layer Authentication:
* Ensures high security & granular control (user-level authentication).
* Preferred in high-security enterprise networks.
# Aggregation or Core Layer Authentication:
* Reduces authentication overhead but provides less granular control.
* Suitable for large-scale networks where authentication load needs to be balanced.
Analysis of the Answer Choices:
# A. Deploying user authentication points at the access layer achieves granular permission management and high network security.
* Correct: Provides fine-grained control per user and prevents unauthorized access.
# B. Moving user authentication points from the access layer to the aggregation or core layer greatly reduces the number of user authentication points, thereby effectively mitigating the pressure on the AAA server.
* Correct: Fewer authentication points mean less load on the AAA server.
# C. Deploying user authentication points at the access layer has both advantages and disadvantages when compared to doing so at the aggregation or core layer. Policy association can be applied if user authentication points are deployed at the access layer.
* Correct: Policy-based authentication is best applied at the access layer for granular control.
# D. When user authentication points are moved from the access layer to the aggregation layer, MAC address authentication for users may fail.
* Incorrect: MAC authentication works at both layers, but policy adjustments may be needed.
# Reference: Huawei HCIE-Datacom Guide - User Authentication Strategies in Enterprise Networks
NEW QUESTION # 135
Which of the following statements aboutOPS (Open Programmability System) application scenariosisincorrect?
- A. When the OPS is used to automatically deploy unconfigured devices, a Python script is used to obtain the IP addresses of the software and configuration file server and download the system software and configuration file.
- B. To enable a network device to automatically send a configuration file to the server after the device configuration is saved, users can use the maintenance assistant to create a timer trigger condition and periodically run the Python script.
- C. The OPS can be used to automatically check the health status of devices.
- D. The OPS can reduce the impact of the network environment in some cases. For example, when collected information is transmitted to a server, the Python script can be used to temporarily store the execution result to the device when the network is disconnected. After the network is reconnected, the execution result is transmitted to the server.
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
A: Correct:OPS can use themaintenance assistantto triggerPython scriptsperiodically or based on events.
B: Correct:OPS supportsautomatic deploymentusing Python scripts to download software and configuration files.
C: Incorrect:OPS doesnot inherently provide local storagefor temporarily saving execution results when the network is disconnected. This would require additional programming logic in the script itself, which is not a built-in feature of OPS.
D: Correct:OPS can run scripts toautomatically check device healthand report the status.
Therefore, the incorrect statement isC.
NEW QUESTION # 136
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