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The Huawei H12-891_V1.0 Exam is designed for professionals who have a minimum of 5 years of experience in the field of data communication. It is intended for network engineers, network architects, and network administrators who are responsible for designing and implementing complex data communication networks.
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Huawei H12-891_V1.0 Certification Exam is a four-hour exam that consists of both theoretical and practical questions. H12-891_V1.0 exam is divided into two parts. The first part is a written exam, which includes multiple-choice questions and short answer questions. The second part is a lab exam, which requires candidates to configure and troubleshoot a real-life network scenario. The lab exam is conducted in a simulated network environment and tests the candidate's ability to apply their knowledge in a practical setting.
NEW QUESTION # 53
Drag the IPsec functions on the left to the corresponding function description on the right.
Answer:
Explanation:
Explanation:
A screenshot of a computer AI-generated content may be incorrect.
IPsec (Internet Protocol Security) provides secure communication over IP networks by implementing multiple security functions.
# Data Origin Authentication:
* Ensures that the sender of the data is genuine and not impersonated.
* Uses techniques such as HMAC (Hash-Based Message Authentication Code).
* Correct Match: "The receiver verifies the identity of the sender." #
# Data Encryption:
* Protects data confidentiality by encrypting packets using AES, 3DES, or other encryption algorithms.
* Ensures that only the intended recipient can decrypt the data.
* Correct Match: "The sender encrypts the data, and the receiver decrypts the data." #
# Data Integrity:
* Ensures that data is not altered in transit.
* Uses cryptographic hashes (e.g., SHA-256) to verify integrity.
* Correct Match: "The receiver verifies received data to determine whether the data has been tampered with." #
# Anti-Replay:
* Protects against packet replay attacks, where an attacker resends captured packets to disrupt communication.
* Uses sequence numbers to detect and reject duplicate packets.
* Correct Match: "The receiver rejects duplicate data packets." #
# Reference: Huawei HCIE Datacom - IPsec Security Functions
NEW QUESTION # 54
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?
Answer: A
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 # 55
The channelized sub-interface and FlexE technologies both can be used to implement network slicing, but the application scenarios of the two technologies are slightly different. Which of the following statements about the two technologies are correct?
Answer: A,B,D
Explanation:
Network Slicing Using Channelized Sub-Interfaces and FlexE
Bothchannelized sub-interfacesandFlexE (Flexible Ethernet)are used fornetwork slicing, but they have differentapplication scenarios:
#A. Channelized sub-interface is recommended for interfaces with bandwidth < 50 Gbit/s.
Channelized sub-interfacessplit a physical interfaceinto multiple logical sub-interfaces.
Best for lower-bandwidth links (<50 Gbit/s).
#B. FlexE is recommended for 50GE and higher-rate interfaces.
FlexEdivides a high-bandwidth physical link(e.g.,100GE, 400GE) into multiple virtual slices.
Used in high-speed backbone and data center networks.
#C. Only FlexE-based network slicing can be deployed across OTN devices.
FlexE is compatible with Optical Transport Network (OTN)and can be used for long-haul slicing across OTN.
#D. Only channelized sub-interface-based network slicing can be deployed across MSTP devices.
Incorrect!While MSTP supports channelized interfaces,FlexE is not restricted to MSTP deployment.
Reference from Huawei HCIE-Datacom Documentation:
Huawei FlexE Technology Whitepaper - Network Slicing in Transport Networks HCIE-Datacom Training Material - Channelized Sub-Interface and FlexE in Network Slicing
NEW QUESTION # 56
What are the types of link types included in OSPF's route LSA?
Answer: A,B,C,D
NEW QUESTION # 57
OSPF is a mature protocol and is unlikely to have route computation errors in a regular networking environment under correct configurations. Which of the following statements are correct about the possible causes preventing an OSPF neighbor relationship from entering Full state?
Answer: A,B,C,D
Explanation:
For OSPF neighbors to reach Full state, they must exchange LSAs (Link State Advertisements) properly and synchronize their databases.
Possible Causes Preventing OSPF from Entering Full State:
✅ A. A link works abnormally
If the physical or Layer 2 link is unstable, OSPF Hello packets may be lost, preventing the Full state.
✅ B. The OSPF network types on both ends of the link are inconsistent
OSPF network types (Broadcast, P2P, NBMA, etc.) must match on both ends.
Example: If one router is P2P and the other is Broadcast, adjacency issues occur.
✅ C. The router IDs of neighbors are the same
Router ID conflicts prevent OSPF adjacencies from forming.
Each router must have a unique Router ID.
✅ D. The OSPF MTU values of interfaces on both ends of the link are different If MTU settings do not match, OSPF Database Description (DD) packets may be dropped, preventing Full state.
Reference from Huawei HCIE-Datacom Documentation:
Huawei OSPF Configuration Guide - Troubleshooting OSPF Neighbor Issues
HCIE-Datacom Study Material - OSPF Adjacency and Route Synchronization
NEW QUESTION # 58
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