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Huawei H12-821_V1.0 Certification Exam is a great way for professionals to demonstrate their expertise and knowledge in the field of datacom core technology. HCIP-Datacom-Core Technology V1.0 certification exam is a valuable asset for those who are looking to advance their careers in the field of datacom core technology. By obtaining this certification, candidates will be able to stand out in the job market and demonstrate their commitment to continuous learning and professional development.

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Huawei H12-821_V1.0 (HCIP-Datacom-Core Technology V1.0) certification exam is a valuable certification for network engineers and IT professionals who want to deepen their knowledge in datacom core network technologies. Passing H12-821_V1.0 Exam demonstrates the candidate's expertise in designing, deploying, and managing complex datacom core networks using Huawei technologies.

Huawei HCIP-Datacom-Core Technology V1.0 Sample Questions (Q83-Q88):

NEW QUESTION # 83
In IPv6, to communicate with a destination host, a host must obtain the link-layer address of the destination host through ARP.

A. TRUE
B. FALSE

Answer: B

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. IPv6 and Neighbor Discovery Protocol (NDP):
* In IPv4, a host uses ARP (Address Resolution Protocol) to map an IP address to a MAC address for communication.
* In IPv6, ARP is not used. Instead, IPv6 uses the Neighbor Discovery Protocol (NDP) for address resolution.
2. Why the Statement is FALSE:
* IPv6 does not use ARP for resolving link-layer addresses.
* IPv6 uses NDP, which operates through ICMPv6 messages to perform the equivalent function.
3. Summary:
* The statement is FALSE because IPv6 uses NDP, not ARP, to obtain the link-layer address of the destination host.

NEW QUESTION # 84
Which of the following descriptions of message authentication methods in IS-IS are correct? (Multiple choice)

A. MD5 authentication can perform the MD5 algorithm on the configured password and then add it to the message, which improves the security of the password.
B. Plain text authentication adds the password directly to the message, which has very low security.
C. Keychain authenticates the password list that changes over time to further improve network security
D. IS-IS carries authentication information in the form of TLV, and the type of authentication TLV is 2

Answer: A,B,C

NEW QUESTION # 85
BFD can quickly detect faults in channels at multiple network layers, ensuring high reliability. To which of the following layers does BFD belong?

A. Network layer
B. Data link layer
C. Application layer
D. Physical layer

Answer: A

Explanation:
BFD operates at the network layer, providing rapid fault detection for forwarding paths, such as IP routing and MPLS tunnels. It interacts closely with network protocols (e.g., OSPF, BGP) to ensure high reliability and quick response to faults. BFD does not belong to the application, data link, or physical layers but functions as a network layer diagnostic tool as confirmed in Huawei's network protocol training .

NEW QUESTION # 86
VRF, also called VPN instance, is a network virtualization technology that helps VPN technology to isolate users. In normal cases, multiple VPN instances can be created on a physical device, and each VPN instance has independent entries. Which of the following resources can be independently owned by a VPN instance?

A. Routing table
B. MAC address table
C. Routing protocol process
D. Interface

Answer: A,C,D

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
1. What is VRF (Virtual Routing and Forwarding)?
* VRF is a network virtualization technology that enables multiple isolated routing tables to coexist on a single physical device.
* Each VRF instance is independent, which ensures separation between different VPNs or users.
2. Resources That VRF Can Independently Own:
Option A: Interface
* Correct.
* Each VRF instance can have its own set of interfaces. These interfaces are bound to a specific VRF, isolating traffic at the physical or logical port level.
Option B: Routing table
* Correct.
* VRF instances maintain independent routing tables. This ensures that routes for one VPN do not overlap or interfere with routes of another VPN.
Option C: MAC address table
* Incorrect.
* The MAC address table is part of Layer 2 operations and is shared by all VRF instances on the device.
VRF operates at Layer 3 and does not isolate MAC address tables.
Option D: Routing protocol process
* Correct.
* Each VRF instance can run its own routing protocol processes (e.g., OSPF, BGP), and these processes are completely independent of other VRF instances.
3. Summary:
* The correct resources that can be independently owned by a VRF instance are Interface, Routing Table
, and Routing Protocol Process.
Reference:
Huawei HCIA-Datacom Study Guide, Chapter "VPN and VRF Concepts."

NEW QUESTION # 87
There are two BFD operating modes. In_______mode, the local end sends BFD Control packets at specified intervals, and the remote end checks whether the local end periodically sends BFD Control packets. (Use lowercase letters.)

Answer:

Explanation:
asynchronous
Explanation:
In asynchronous mode, the local device sends BFD control packets at predefined intervals, and the remote device monitors the receipt of these packets to detect connectivity issues.
This is one of the two operating modes in BFD, the other being demand mode .

NEW QUESTION # 88
......

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